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2016 | 2017 | 2018 | 2019 | 2020 | 2021 | View History |
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270 | 244 | 288 | 321 | 308 | 295 | 1979-2021 | ||||||
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1 | 1 | 1 | 1 | 1 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 3 | 3 | 1979-2021 | ||||||
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0 | 0 | W | W | 1979-2019 | ||||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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4 | 3 | 3 | 10 | 9 | 1 | 1979-2021 | ||||||
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0 | W | W | W | 1979-2019 | ||||||||
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3 | 1 | W | W | 1979-2019 | ||||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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10 | 8 | 7 | 6 | 7 | 6 | 1981-2021 | ||||||
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4 | 3 | 2 | 2 | 2 | 2 | 1979-2021 | ||||||
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5 | 4 | 4 | 3 | 4 | 3 | 1979-2021 | ||||||
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1 | 1 | 1 | 1 | 1 | 1 | 1981-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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1 | 1 | 1 | 0 | 0 | 0 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 1 | 1 | 1979-2021 | ||||||
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9 | 12 | 13 | 29 | 20 | 22 | 1979-2021 | ||||||
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6 | 10 | 11 | 26 | 18 | 20 | 1979-2021 | ||||||
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3 | 2 | 2 | 3 | 2 | 2 | 1979-2021 | ||||||
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1 | 0 | W | 0 | 0 | 1 | 1979-2021 | ||||||
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37 | 28 | 37 | 35 | 29 | 21 | 1979-2021 | ||||||
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139 | 122 | 158 | 159 | 166 | 175 | 1981-2021 | ||||||
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20 | 18 | 22 | 21 | 18 | 10 | 1979-2021 | ||||||
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58 | 46 | 50 | 46 | 45 | 40 | 1979-2021 | ||||||
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9 | 7 | 7 | 7 | 7 | 9 | 1979-2021 | ||||||
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20 | 17 | 16 | 17 | 14 | 11 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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5 | 5 | 5 | 5 | 4 | 4 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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1 | 1 | 1 | 2 | 1 | 0 | 1979-2021 | ||||||
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17 | 20 | 50 | 55 | 71 | 96 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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1 | 1 | 1 | 1 | 1 | 1 | 1979-2021 | ||||||
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8 | 7 | 6 | 5 | 5 | 4 | 1979-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1981-2021 | ||||||
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2 | 3 | 2 | 2 | 2 | 1 | 2007-2021 | ||||||
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7 | 12 | 12 | 17 | 18 | 16 | 1979-2021 | ||||||
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14 | 15 | 17 | 16 | 12 | 10 | 2007-2021 | ||||||
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21 | 18 | 14 | 20 | 16 | 17 | 1981-2021 | ||||||
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0 | 0 | 0 | 0 | 0 | 0 | 1979-2021 | ||||||
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20 | 17 | 13 | 18 | 15 | 16 | 1981-2021 | ||||||
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1 | 1 | 1 | 2 | 1 | 1 | 1981-2021 | ||||||
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270 | 244 | 288 | 321 | 305 | 292 | 1979-2021 | ||||||
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1979-2006 |
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- = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
Notes: W -- Individual state volumes are withheld to avoid disclosure of operator-level reserves data, due to statistical precision requirements, or due to other data quality reasons. The individual state volumes are included in the U.S. Total volume. See Definitions, Sources, and Notes link above for more information on this table. |
Release Date: 12/30/2022 |
Next Release Date: 12/29/2023 |