Oil Prices in 2005: WTI & Brent History and Monthly Averages
WTI average
$56.64
EIA annual average
WTI vs prior year
+36.4%
2004: $41.51
Brent average
$54.57
EIA annual average
Brent vs prior year
+42.6%
2004: $38.26
WTI averaged $56.64 per barrel in 2005, up $15.13 (36.4%) from 2004; that was the highest annual average since EIA's WTI series began in 1986, and the 4th consecutive annual increase.
Monthly average prices in 2005
| Month | WTI avg | WTI high | WTI low | Brent avg | Brent − WTI (matched dates) | WTI (September 2026 $) | Brent (September 2026 $) |
|---|---|---|---|---|---|---|---|
| January | $46.84 | $49.43 | $42.16 | $44.51 | −$2.61 | $82.76 | $78.64 |
| February | $48.15 | $52.20 | $45.35 | $45.48 | −$2.71 | $84.59 | $79.90 |
| March | $54.19 | $56.80 | $49.43 | $53.10 | −$1.08 | $94.46 | $92.56 |
| April | $52.98 | $57.26 | $49.20 | $51.88 | −$1.10 | $91.73 | $89.83 |
| May | $49.83 | $52.08 | $46.99 | $48.65 | −$1.22 | $86.37 | $84.32 |
| June | $56.35 | $59.78 | $52.51 | $54.35 | −$2.00 | $97.62 | $94.15 |
| July | $59.00 | $61.24 | $56.73 | $57.52 | −$1.46 | $101.74 | $99.19 |
| August | $64.99 | $69.91 | $60.76 | $63.98 | −$1.00 | $111.50 | $109.76 |
| September | $65.59 | $69.50 | $62.91 | $62.91 | −$2.74 | $111.17 | $106.62 |
| October | $62.26 | $65.36 | $59.80 | $58.54 | −$3.72 | $105.31 | $99.02 |
| November | $58.32 | $61.70 | $56.20 | $55.24 | −$2.88 | $99.45 | $94.19 |
| December | $59.41 | $61.36 | $57.31 | $56.86 | −$2.60 | $101.72 | $97.35 |
Monthly averages are EIA's published figures. Brent − WTI is the average over dates with both prices published, so it can differ from the difference between the two monthly averages. Inflation-adjusted columns use CPI-U for each month, expressed in September 2026 dollars; “—” means CPI-U for that month is not available.
From $42.16 on Jan 3, 2005, WTI climbed to $69.91 by Aug 30, 2005, a 66% gain. The price finished the year 45% above its first 2005 close of $42.16. Second-half prices averaged $61.69, up from $51.54 in the first half. The steepest fall within the year ran from $69.91 on Aug 30, 2005 to $56.20 on Nov 17, 2005, a 20% drop.
Brent traded below WTI throughout 2005: its monthly average was lower in every month, and on the 249 matched dates it averaged $2.07 less. Brent averaged $54.57, up $16.31 (42.6%) from 2004.
The monthly average was lowest in January ($46.84) and highest in September ($65.59). In September 2026 dollars (CPI-U), the 2005 average is $97.72, higher than 2025's real average by $29.28 (42.8%). The 2000s as a whole averaged $51.10, so 2005 ran above its decade. Of 40 complete years with an EIA annual average, 2005 ranks 17th highest.
2005 summary statistics
| Measure | WTI | Brent | Brent − WTI |
|---|---|---|---|
| Average | $56.64 | $54.57 | −$2.07 |
| Change vs 2004 average | +$15.13 | +$16.31 | +$1.10 |
| Highest daily price | $69.91 Aug 30, 2005 | $67.26 Aug 12, 2005 | — |
| Lowest daily price | $42.16 Jan 3, 2005 | $40.75 Jan 4, 2005 | — |
| Highest daily spread | — | — | +$2.65 Mar 24, 2005 |
| Lowest daily spread | — | — | −$5.74 Oct 11, 2005 |
| First observation | $42.16 Jan 3, 2005 | $40.75 Jan 4, 2005 | — |
| Last observation | $61.06 Dec 30, 2005 | $58.34 Dec 30, 2005 | — |
| Published daily observations | 251 | 257 | 249 matched |
| Average in September 2026 dollars | $97.72 | $94.15 | — |
Daily spot prices in 2005
Show all 259 dates (Jan 3, 2005 – Dec 30, 2005)
| Date | WTI | Brent | Brent − WTI |
|---|---|---|---|
| Jan 3, 2005 | $42.16 | — | — |
| Jan 4, 2005 | $43.96 | $40.75 | −$3.21 |
| Jan 5, 2005 | $43.41 | $41.00 | −$2.41 |
| Jan 6, 2005 | $45.51 | $43.25 | −$2.26 |
| Jan 7, 2005 | $45.32 | $43.28 | −$2.04 |
| Jan 10, 2005 | $45.31 | $44.71 | −$0.60 |
| Jan 11, 2005 | $45.66 | $43.45 | −$2.21 |
| Jan 12, 2005 | $46.46 | $43.75 | −$2.71 |
| Jan 13, 2005 | $48.11 | $45.76 | −$2.35 |
| Jan 14, 2005 | $48.41 | $45.26 | −$3.15 |
| Jan 17, 2005 | — | $45.10 | — |
| Jan 18, 2005 | $48.46 | $45.18 | −$3.28 |
| Jan 19, 2005 | $47.61 | $45.16 | −$2.45 |
| Jan 20, 2005 | $47.01 | $44.06 | −$2.95 |
| Jan 21, 2005 | $48.31 | $45.88 | −$2.43 |
| Jan 24, 2005 | $48.61 | $45.74 | −$2.87 |
| Jan 25, 2005 | $49.43 | $46.14 | −$3.29 |
| Jan 26, 2005 | $48.80 | $45.94 | −$2.86 |
| Jan 27, 2005 | $48.80 | $46.51 | −$2.29 |
| Jan 28, 2005 | $47.15 | $44.75 | −$2.40 |
| Jan 31, 2005 | $48.25 | $44.51 | −$3.74 |
| Feb 1, 2005 | $47.10 | $45.12 | −$1.98 |
| Feb 2, 2005 | $46.65 | $44.17 | −$2.48 |
| Feb 3, 2005 | $46.40 | $43.13 | −$3.27 |
| Feb 4, 2005 | $46.45 | $43.26 | −$3.19 |
| Feb 7, 2005 | $45.35 | $42.70 | −$2.65 |
| Feb 8, 2005 | $45.40 | $42.79 | −$2.61 |
| Feb 9, 2005 | $45.45 | $42.49 | −$2.96 |
| Feb 10, 2005 | $47.05 | $44.04 | −$3.01 |
| Feb 11, 2005 | $47.15 | $44.41 | −$2.74 |
| Feb 14, 2005 | $47.50 | $44.51 | −$2.99 |
| Feb 15, 2005 | $47.30 | $44.91 | −$2.39 |
| Feb 16, 2005 | $48.35 | $45.42 | −$2.93 |
| Feb 17, 2005 | $47.50 | $45.42 | −$2.08 |
| Feb 18, 2005 | $48.45 | $45.86 | −$2.59 |
| Feb 21, 2005 | — | $46.09 | — |
| Feb 22, 2005 | $51.00 | $47.60 | −$3.40 |
| Feb 23, 2005 | $51.73 | $48.16 | −$3.57 |
| Feb 24, 2005 | $52.05 | $49.24 | −$2.81 |
| Feb 25, 2005 | $52.20 | $50.05 | −$2.15 |
| Feb 28, 2005 | $51.75 | $50.13 | −$1.62 |
| Mar 1, 2005 | $51.67 | $50.47 | −$1.20 |
| Mar 2, 2005 | $53.00 | $51.05 | −$1.95 |
| Mar 3, 2005 | $53.60 | $52.89 | −$0.71 |
| Mar 4, 2005 | $53.70 | $52.10 | −$1.60 |
| Mar 7, 2005 | $53.90 | $51.87 | −$2.03 |
| Mar 8, 2005 | $54.55 | $53.29 | −$1.26 |
| Mar 9, 2005 | $54.75 | $54.11 | −$0.64 |
| Mar 10, 2005 | $53.52 | $53.04 | −$0.48 |
| Mar 11, 2005 | $54.40 | $53.15 | −$1.25 |
| Mar 14, 2005 | $54.90 | $53.68 | −$1.22 |
| Mar 15, 2005 | $55.05 | $53.97 | −$1.08 |
| Mar 16, 2005 | $56.50 | $54.61 | −$1.89 |
| Mar 17, 2005 | $56.40 | $56.03 | −$0.37 |
| Mar 18, 2005 | $56.80 | $55.97 | −$0.83 |
| Mar 21, 2005 | $56.70 | $55.79 | −$0.91 |
| Mar 22, 2005 | $55.95 | $55.39 | −$0.56 |
| Mar 23, 2005 | $49.43 | $51.52 | +$2.09 |
| Mar 24, 2005 | $49.70 | $52.35 | +$2.65 |
| Mar 28, 2005 | $54.06 | $51.75 | −$2.31 |
| Mar 29, 2005 | $54.26 | $51.42 | −$2.84 |
| Mar 30, 2005 | $53.96 | $50.63 | −$3.33 |
| Mar 31, 2005 | $55.31 | $53.22 | −$2.09 |
| Apr 1, 2005 | $57.26 | $54.14 | −$3.12 |
| Apr 4, 2005 | $56.86 | $55.92 | −$0.94 |
| Apr 5, 2005 | $55.83 | $54.53 | −$1.30 |
| Apr 6, 2005 | $55.88 | $54.08 | −$1.80 |
| Apr 7, 2005 | $54.16 | $52.57 | −$1.59 |
| Apr 8, 2005 | $53.46 | $51.83 | −$1.63 |
| Apr 11, 2005 | $53.71 | $51.21 | −$2.50 |
| Apr 12, 2005 | $51.54 | $51.53 | −$0.01 |
| Apr 13, 2005 | $50.21 | $49.67 | −$0.54 |
| Apr 14, 2005 | $51.11 | $50.21 | −$0.90 |
| Apr 15, 2005 | $50.61 | $49.52 | −$1.09 |
| Apr 18, 2005 | $50.52 | $48.58 | −$1.94 |
| Apr 19, 2005 | $52.33 | $50.79 | −$1.54 |
| Apr 20, 2005 | $52.45 | $51.53 | −$0.92 |
| Apr 21, 2005 | $52.49 | $51.73 | −$0.76 |
| Apr 22, 2005 | $54.16 | $53.51 | −$0.65 |
| Apr 25, 2005 | $53.16 | $53.10 | −$0.06 |
| Apr 26, 2005 | $54.33 | $52.47 | −$1.86 |
| Apr 27, 2005 | $51.37 | $51.29 | −$0.08 |
| Apr 28, 2005 | $51.92 | $50.74 | −$1.18 |
| Apr 29, 2005 | $49.20 | $50.61 | +$1.41 |
| May 2, 2005 | $50.94 | $50.89 | −$0.05 |
| May 3, 2005 | $49.60 | $49.48 | −$0.12 |
| May 4, 2005 | $50.22 | $50.36 | +$0.14 |
| May 5, 2005 | $51.12 | $49.81 | −$1.31 |
| May 6, 2005 | $51.30 | $49.70 | −$1.60 |
| May 9, 2005 | $52.04 | $49.71 | −$2.33 |
| May 10, 2005 | $51.76 | $50.61 | −$1.15 |
| May 11, 2005 | $50.39 | $48.91 | −$1.48 |
| May 12, 2005 | $48.83 | $47.40 | −$1.43 |
| May 13, 2005 | $48.65 | $46.85 | −$1.80 |
| May 16, 2005 | $48.64 | $46.42 | −$2.22 |
| May 17, 2005 | $48.97 | $47.31 | −$1.66 |
| May 18, 2005 | $46.99 | $47.35 | +$0.36 |
| May 19, 2005 | $47.00 | $46.92 | −$0.08 |
| May 20, 2005 | $47.25 | $46.91 | −$0.34 |
| May 23, 2005 | $48.68 | $47.28 | −$1.40 |
| May 24, 2005 | $49.14 | $47.29 | −$1.85 |
| May 25, 2005 | $50.37 | $49.24 | −$1.13 |
| May 26, 2005 | $50.89 | $49.71 | −$1.18 |
| May 27, 2005 | $51.65 | $49.42 | −$2.23 |
| May 30, 2005 | — | $49.33 | — |
| May 31, 2005 | $52.08 | $49.30 | −$2.78 |
| Jun 1, 2005 | $54.40 | $50.46 | −$3.94 |
| Jun 2, 2005 | $53.46 | $51.30 | −$2.16 |
| Jun 3, 2005 | $55.08 | $51.90 | −$3.18 |
| Jun 6, 2005 | $54.46 | $52.61 | −$1.85 |
| Jun 7, 2005 | $53.84 | $51.62 | −$2.22 |
| Jun 8, 2005 | $52.51 | $51.92 | −$0.59 |
| Jun 9, 2005 | $54.36 | $51.36 | −$3.00 |
| Jun 10, 2005 | $53.55 | $51.98 | −$1.57 |
| Jun 13, 2005 | $55.47 | $52.00 | −$3.47 |
| Jun 14, 2005 | $55.03 | $53.52 | −$1.51 |
| Jun 15, 2005 | $55.53 | $54.12 | −$1.41 |
| Jun 16, 2005 | $56.48 | $54.30 | −$2.18 |
| Jun 17, 2005 | $58.40 | $56.92 | −$1.48 |
| Jun 20, 2005 | $59.19 | $57.10 | −$2.09 |
| Jun 21, 2005 | $58.90 | $57.36 | −$1.54 |
| Jun 22, 2005 | $58.27 | $56.06 | −$2.21 |
| Jun 23, 2005 | $59.23 | $57.03 | −$2.20 |
| Jun 24, 2005 | $59.63 | $57.21 | −$2.42 |
| Jun 27, 2005 | $59.78 | $58.50 | −$1.28 |
| Jun 28, 2005 | $58.32 | $57.75 | −$0.57 |
| Jun 29, 2005 | $57.23 | $55.42 | −$1.81 |
| Jun 30, 2005 | $56.63 | $55.36 | −$1.27 |
| Jul 1, 2005 | $59.11 | $56.41 | −$2.70 |
| Jul 4, 2005 | — | $57.13 | — |
| Jul 5, 2005 | $59.71 | $57.86 | −$1.85 |
| Jul 6, 2005 | $61.24 | $58.38 | −$2.86 |
| Jul 7, 2005 | $60.76 | $57.55 | −$3.21 |
| Jul 8, 2005 | $59.71 | $59.00 | −$0.71 |
| Jul 11, 2005 | $59.23 | $56.10 | −$3.13 |
| Jul 12, 2005 | $60.49 | $58.95 | −$1.54 |
| Jul 13, 2005 | $60.00 | $58.33 | −$1.67 |
| Jul 14, 2005 | $57.83 | $56.79 | −$1.04 |
| Jul 15, 2005 | $58.36 | $56.98 | −$1.38 |
| Jul 18, 2005 | $57.12 | $56.25 | −$0.87 |
| Jul 19, 2005 | $57.61 | $56.75 | −$0.86 |
| Jul 20, 2005 | $56.73 | $56.39 | −$0.34 |
| Jul 21, 2005 | $57.31 | $55.59 | −$1.72 |
| Jul 22, 2005 | $57.75 | $56.98 | −$0.77 |
| Jul 25, 2005 | $58.16 | $57.51 | −$0.65 |
| Jul 26, 2005 | $59.05 | $58.58 | −$0.47 |
| Jul 27, 2005 | $59.12 | $58.34 | −$0.78 |
| Jul 28, 2005 | $59.91 | $58.28 | −$1.63 |
| Jul 29, 2005 | $60.71 | $59.77 | −$0.94 |
| Aug 1, 2005 | $61.51 | $60.56 | −$0.95 |
| Aug 2, 2005 | $61.87 | $60.13 | −$1.74 |
| Aug 3, 2005 | $60.76 | $60.04 | −$0.72 |
| Aug 4, 2005 | $61.60 | $60.62 | −$0.98 |
| Aug 5, 2005 | $62.44 | $60.73 | −$1.71 |
| Aug 8, 2005 | $63.92 | $62.56 | −$1.36 |
| Aug 9, 2005 | $63.13 | $62.79 | −$0.34 |
| Aug 10, 2005 | $64.80 | $63.77 | −$1.03 |
| Aug 11, 2005 | $65.67 | $65.90 | +$0.23 |
| Aug 12, 2005 | $66.71 | $67.26 | +$0.55 |
| Aug 15, 2005 | $66.21 | $66.68 | +$0.47 |
| Aug 16, 2005 | $66.11 | $65.10 | −$1.01 |
| Aug 17, 2005 | $63.29 | $63.41 | +$0.12 |
| Aug 18, 2005 | $63.47 | $61.75 | −$1.72 |
| Aug 19, 2005 | $65.51 | $64.21 | −$1.30 |
| Aug 22, 2005 | $65.46 | $65.87 | +$0.41 |
| Aug 23, 2005 | $65.81 | $65.16 | −$0.65 |
| Aug 24, 2005 | $67.10 | $65.25 | −$1.85 |
| Aug 25, 2005 | $67.29 | $65.88 | −$1.41 |
| Aug 26, 2005 | $66.05 | $66.23 | +$0.18 |
| Aug 29, 2005 | $67.41 | $64.77 | −$2.64 |
| Aug 30, 2005 | $69.91 | $66.15 | −$3.76 |
| Aug 31, 2005 | $68.63 | $66.80 | −$1.83 |
| Sep 1, 2005 | $69.50 | $66.79 | −$2.71 |
| Sep 2, 2005 | $66.91 | $65.95 | −$0.96 |
| Sep 5, 2005 | — | $64.16 | — |
| Sep 6, 2005 | $65.83 | $64.16 | −$1.67 |
| Sep 7, 2005 | $64.38 | $63.60 | −$0.78 |
| Sep 8, 2005 | $64.80 | $61.66 | −$3.14 |
| Sep 9, 2005 | $64.21 | $62.62 | −$1.59 |
| Sep 12, 2005 | $63.29 | $60.69 | −$2.60 |
| Sep 13, 2005 | $63.18 | $61.31 | −$1.87 |
| Sep 14, 2005 | $65.20 | $61.70 | −$3.50 |
| Sep 15, 2005 | $64.64 | $61.90 | −$2.74 |
| Sep 16, 2005 | $62.91 | $60.48 | −$2.43 |
| Sep 19, 2005 | $67.21 | $64.04 | −$3.17 |
| Sep 20, 2005 | $66.24 | $62.98 | −$3.26 |
| Sep 21, 2005 | $66.96 | $64.31 | −$2.65 |
| Sep 22, 2005 | $67.07 | $64.64 | −$2.43 |
| Sep 23, 2005 | $64.67 | $62.17 | −$2.50 |
| Sep 26, 2005 | $65.98 | $61.73 | −$4.25 |
| Sep 27, 2005 | $64.94 | $62.56 | −$2.38 |
| Sep 28, 2005 | $66.36 | $62.81 | −$3.55 |
| Sep 29, 2005 | $66.83 | $62.02 | −$4.81 |
| Sep 30, 2005 | $66.21 | $61.70 | −$4.51 |
| Oct 3, 2005 | $65.36 | $61.64 | −$3.72 |
| Oct 4, 2005 | $63.74 | $59.17 | −$4.57 |
| Oct 5, 2005 | $62.56 | $59.33 | −$3.23 |
| Oct 6, 2005 | $61.81 | $57.20 | −$4.61 |
| Oct 7, 2005 | $61.81 | $57.29 | −$4.52 |
| Oct 10, 2005 | $60.71 | $57.01 | −$3.70 |
| Oct 11, 2005 | $63.84 | $58.10 | −$5.74 |
| Oct 12, 2005 | $64.13 | $59.91 | −$4.22 |
| Oct 13, 2005 | $63.05 | $59.48 | −$3.57 |
| Oct 14, 2005 | $62.61 | $58.45 | −$4.16 |
| Oct 17, 2005 | $64.26 | $59.81 | −$4.45 |
| Oct 18, 2005 | $62.94 | $58.85 | −$4.09 |
| Oct 19, 2005 | $62.11 | $58.13 | −$3.98 |
| Oct 20, 2005 | $61.04 | $57.04 | −$4.00 |
| Oct 21, 2005 | $61.05 | $56.94 | −$4.11 |
| Oct 24, 2005 | $60.63 | $57.64 | −$2.99 |
| Oct 25, 2005 | $62.83 | $58.72 | −$4.11 |
| Oct 26, 2005 | $60.85 | $58.56 | −$2.29 |
| Oct 27, 2005 | $61.03 | $58.10 | −$2.93 |
| Oct 28, 2005 | $61.30 | $59.47 | −$1.83 |
| Oct 31, 2005 | $59.80 | $58.47 | −$1.33 |
| Nov 1, 2005 | $59.85 | $56.69 | −$3.16 |
| Nov 2, 2005 | $59.75 | $58.53 | −$1.22 |
| Nov 3, 2005 | $61.70 | $59.55 | −$2.15 |
| Nov 4, 2005 | $60.60 | $60.48 | −$0.12 |
| Nov 7, 2005 | $59.40 | $58.19 | −$1.21 |
| Nov 8, 2005 | $59.70 | $57.89 | −$1.81 |
| Nov 9, 2005 | $59.65 | $57.71 | −$1.94 |
| Nov 10, 2005 | $57.80 | $55.85 | −$1.95 |
| Nov 11, 2005 | $57.45 | $54.30 | −$3.15 |
| Nov 14, 2005 | $57.60 | $54.10 | −$3.50 |
| Nov 15, 2005 | $57.05 | $54.45 | −$2.60 |
| Nov 16, 2005 | $57.85 | $53.68 | −$4.17 |
| Nov 17, 2005 | $56.20 | $53.80 | −$2.40 |
| Nov 18, 2005 | $56.30 | $52.84 | −$3.46 |
| Nov 21, 2005 | $57.75 | $53.36 | −$4.39 |
| Nov 22, 2005 | $58.30 | $54.21 | −$4.09 |
| Nov 23, 2005 | $58.35 | $53.73 | −$4.62 |
| Nov 24, 2005 | — | $53.41 | — |
| Nov 25, 2005 | — | $53.15 | — |
| Nov 28, 2005 | $57.36 | $52.91 | −$4.45 |
| Nov 29, 2005 | $56.46 | $53.24 | −$3.22 |
| Nov 30, 2005 | $57.33 | $53.25 | −$4.08 |
| Dec 1, 2005 | $58.46 | $53.65 | −$4.81 |
| Dec 2, 2005 | $59.31 | $54.91 | −$4.40 |
| Dec 5, 2005 | $59.91 | $56.05 | −$3.86 |
| Dec 6, 2005 | $59.96 | $55.68 | −$4.28 |
| Dec 7, 2005 | $59.21 | $55.17 | −$4.04 |
| Dec 8, 2005 | $60.66 | $56.26 | −$4.40 |
| Dec 9, 2005 | $59.41 | $57.18 | −$2.23 |
| Dec 12, 2005 | $61.36 | $57.23 | −$4.13 |
| Dec 13, 2005 | $61.36 | $59.16 | −$2.20 |
| Dec 14, 2005 | $60.86 | $59.59 | −$1.27 |
| Dec 15, 2005 | $60.01 | $59.67 | −$0.34 |
| Dec 16, 2005 | $58.01 | $58.11 | +$0.10 |
| Dec 19, 2005 | $57.31 | $56.09 | −$1.22 |
| Dec 20, 2005 | $57.81 | $56.08 | −$1.73 |
| Dec 21, 2005 | $58.56 | $56.05 | −$2.51 |
| Dec 22, 2005 | $58.08 | $57.30 | −$0.78 |
| Dec 23, 2005 | $58.08 | $56.28 | −$1.80 |
| Dec 26, 2005 | — | $56.54 | — |
| Dec 27, 2005 | $58.16 | — | — |
| Dec 28, 2005 | $59.81 | $56.91 | −$2.90 |
| Dec 29, 2005 | $60.26 | $57.72 | −$2.54 |
| Dec 30, 2005 | $61.06 | $58.34 | −$2.72 |
“—” means EIA published no price for that benchmark on that date.
Source and methodology
| Provider | Series | Units | Coverage | Latest observation |
|---|---|---|---|---|
| U.S. Energy Information Administration | RWTC — WTI spot price FOB | $/bbl | Jan 3, 2005 – Dec 30, 2005 | Dec 30, 2005 |
| U.S. Energy Information Administration | RBRTE — Brent spot price FOB | $/bbl | Jan 4, 2005 – Dec 30, 2005 | Dec 30, 2005 |
| U.S. Bureau of Labor Statistics | CUUR0000SA0 — CPI-U, all items, NSA | index, 1982–84=100 | monthly and annual average | September 2026 |
Inflation adjustment: real = nominal × CPI-U(September 2026) ÷ CPI-U(period). Annual figures use the BLS annual average CPI-U; a year without one uses the mean of the months published so far.
Last updated: Oct 21, 2026, 5:27 PM CDT. Raw values are shown in source units; any conversion is labeled. See methodology and data sources.
Download:2005 daily prices (CSV)