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| U.S. Natural Gas Number of Underground Storage Acquifers Capacity (Number of Elements) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 49 | |||||||||
| 2000's | 49 | 39 | 38 | 43 | 43 | 44 | 44 | 43 | 43 | 43 |
| 2010's | 43 | 43 | 44 | 47 | 46 | 47 | 47 | 47 | 47 | 47 |
| 2020's | 47 | 47 | 47 | 47 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 9/30/2025 |
| Next Release Date: 10/31/2025 |