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| Illinois Natural Gas Underground Storage Depleted Fields Capacity (Million Cubic Feet) | |||||
| Decade | Year-0 | Year-1 | Year-2 | Year-3 | Year-4 | Year-5 | Year-6 | Year-7 | Year-8 | Year-9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1990's | 153,415 | |||||||||
| 2000's | 153,415 | 153,415 | 154,615 | 205,846 | 215,846 | 103,731 | 103,731 | 103,731 | 103,606 | 103,606 |
| 2010's | 218,106 | 220,070 |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 4/30/2013 |
| Next Release Date: 5/31/2013 |