U.S. EIA
Stocks fell about 25% from March to July during the Iran-war release; the reserve last held this little oil while it was still being built in 1983.
The chart that circulated
The circulated 1990–2026 view; underlying data: U.S. EIA.
The complete EIA history
U.S. EIA monthly data through April 2026 and weekly data through July 17, 2026.