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| Refining District Indiana-Illinois-Kentucky Normal Butane-Butylene Stocks at Refineries (Thousand Barrels) | ||||||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 898 | 962 | 759 | 915 | 545 | 805 | 824 | |||
| 2000's | 1,128 | 791 | 796 | 873 | 926 | 741 | 827 | 751 | 1,135 | 939 |
| 2010's | 1,280 | 1,102 | 1,329 | 1,429 | 1,733 | 1,531 | 1,708 | 911 | 960 | 1,093 |
| 2020's | 1,478 | 1,344 | -- | -- | -- | -- |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 5/29/2026 |
| Next Release Date: 8/31/2026 |