Every value U.S. Energy Information Administration revised after first release. Each vintage is kept, so first print vs. current is a lookup, not a reconstruction.
Tracking since 2026-07-04; earlier revisions aren’t captured.
| Observation | First print | Current | Δ | Vintages | Last revised |
|---|---|---|---|---|---|
| May 2026 | $19.83 | $19.73 | -$0.1 | 2 | 2026-09-02 |
| Apr 2026 | $18.17 | $18.04 | -$0.13 | 2 | 2026-09-02 |
| Mar 2026 | $16.25 | $16.16 | -$0.09 | 2 | 2026-09-02 |
| Feb 2026 | $15.06 | $14.95 | -$0.11 | 2 | 2026-09-02 |
| Oct 2025 | $19.32 | $19.34 | +$0.02 | 2 | 2026-09-30 |
| Aug 2025 | $26.24 | $26.26 | +$0.02 | 2 | 2026-09-30 |
| Jul 2025 | $25.41 | $25.44 | +$0.03 | 2 | 2026-09-30 |
| Jun 2025 | $23.26 | $23.21 | -$0.05 | 2 | 2026-09-30 |
| May 2025 | $19.24 | $19.26 | +$0.02 | 2 | 2026-09-30 |
Δ is current minus first print, across all vintages. Every intermediate vintage, with its source URL, is in the JSON API.