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| Montana Crude Oil + Lease Condensate Reserves Revision Decreases (Million Barrels) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 | 
|---|---|---|---|---|---|---|---|---|---|---|
| 2000's | 47 | |||||||||
| 2010's | 44 | 51 | 38 | 59 | 44 | 114 | 57 | 4 | 52 | 36 | 
| 2020's | 115 | 14 | 
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. | 
| Release Date: 12/30/2022 | 
| Next Release Date: NA |