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Illinois Natural Gas in Underground Storage (Working Gas) (Million Cubic Feet)
Illinois Natural Gas in Underground Storage (Working Gas) (Million Cubic Feet)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1990 234,149 182,982 149,826 145,903 177,193 210,075 239,633 275,310 309,341 328,106 329,864 292,842
  1991 224,217 175,723 150,281 152,048 183,462 213,723 242,377 276,319 309,328 336,048 317,183 283,100
  1992 214,872 167,256 140,681 132,922 166,585 198,351 228,870 267,309 302,100 328,395 310,252 264,393
  1993 163,300 114,381 89,600 92,163 125,356 158,219 189,002 222,776 258,991 283,523 274,172 230,208
  1994 157,199 113,092 98,529 97,958 121,798 151,412 184,055 218,595 255,984 282,845 274,095 241,584
  1995 178,160 120,195 97,724 93,988 92,541 121,374 151,483 183,573 215,512 246,439 232,236 188,151
  1996 120,519 79,256 56,219 59,154 86,393 118,776 154,567 190,009 226,947 255,683 239,749 203,700
  1997 138,998 98,793 75,078 75,280 99,145 127,551 160,637 196,838 233,525 261,895 260,426 214,951
  1998 156,932 120,860 92,702 93,474 117,747 146,257 173,791 205,365 238,735 267,807 258,346 216,601
  1999 135,873 94,105 67,346 56,392 82,340 108,258 134,603 167,871 206,322 237,949 231,869 189,881
  2000 132,190 96,786 84,010 71,004 84,301 117,369 146,094 174,487 206,117 240,807 214,939 172,041
  2001 129,212 85,661 71,411 82,609 114,242 140,178 160,520 184,198 217,720 243,762 267,342 219,574
  2002 161,736 113,770 86,779 77,962 104,139 141,616 170,069 206,423 244,947 274,666 255,261 203,035
  2003 132,405 82,065 67,106 80,514 109,713 142,320 174,663 204,926 238,005 270,223 255,645 212,175
  2004 144,641 99,863 71,185 71,924 99,617 134,068 168,863 202,952 234,082 264,621 250,163 198,299
  2005 132,232 83,972 55,493 53,698 82,694 117,194 153,297 190,315 227,865 261,643 250,717 198,093
  2006 153,300 94,611 64,245 63,063 89,354 121,953 155,762 191,932 230,311 264,060 250,715 203,910
  2007 135,524 81,300 66,832 62,066 92,454 124,123 158,037 191,475 230,656 265,789 246,542 193,583
  2008 125,404 70,986 50,370 50,418 75,957 111,563 146,306 186,643 225,689 261,541 247,238 192,434
  2009 127,374 77,570 52,447 49,152 79,678 112,915 148,576 187,702 228,180 264,630 254,317 199,106
  2010 131,031 78,002 56,665 64,056 93,880 125,022 152,376 188,058 226,231 265,070 255,567 201,427
  2011 128,872 76,400 46,800 52,708 79,932 113,389 144,722 184,768 223,348 258,711 256,516 202,602
  2012 134,587 79,171 63,763 61,926 90,925 119,634 150,855 189,702 225,161 261,222 252,353 201,836
  2013 132,835 72,024 45,603 50,160 76,598 110,815 142,938 179,343 218,245 252,919 244,957 188,012
  2014 115,818 66,097 42,443 44,327 73,093 107,952 143,370 182,604 221,065 260,629 249,373 198,287
  2015 134,758 76,654 55,463 54,896 83,725 112,590 145,276 179,696 216,934 253,690 254,824 209,121
  2016 139,517 89,243 63,862 59,753 85,401 116,447 144,886 178,422 219,785 257,468 256,765 203,126
  2017 143,738 100,821 65,553 61,844 78,951 110,601 135,781 170,336 211,642 251,807 252,161 194,471
  2018 129,774 86,768 55,415 48,533 68,800 97,672 126,407 161,080 203,800 247,060 241,940 197,601
  2019 125,854 80,861 59,656 62,827 91,390 122,310 144,108 177,121 215,735 254,887 252,371 211,681
  2020 159,166 103,869 69,185 62,389 80,408 108,048 137,496 177,849 218,292 256,428 260,310 215,056
  2021 155,627 107,036 75,596 66,523 81,374 107,010 132,261 167,218 212,382 256,652 257,419 212,095
  2022 138,734 92,659 62,858 58,710 77,066 103,241 133,722 168,348 207,233 252,409 247,453 201,375
  2023 153,452 102,194 66,288 60,941 75,887 102,179 130,307 164,062 203,843 249,732 256,519 214,959
  2024 149,362

- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 3/29/2024
Next Release Date: 4/30/2024

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