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| Illinois Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year (Million Cubic Feet) | |||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 9,275 | 18,043 | 13,193 | 1,851 | 5,255 | 9,637 | 5,108 | 8,495 | 9,773 | 7,534 | 9,475 | 11,984 |
| 1991 | -9,933 | -7,259 | 454 | 6,145 | 6,270 | 3,648 | 2,744 | 1,010 | -13 | 7,942 | -12,681 | -9,742 |
| 1992 | -9,345 | -8,466 | -9,599 | -19,126 | -16,878 | -15,372 | -13,507 | -9,010 | -7,228 | -7,653 | -6,931 | -18,707 |
| 1993 | -51,572 | -52,876 | -51,081 | -40,760 | -41,229 | -40,132 | -39,867 | -44,533 | -43,110 | -44,873 | -36,080 | -34,184 |
| 1994 | -6,101 | -1,289 | 8,929 | 5,795 | -3,558 | -6,807 | -4,948 | -4,181 | -3,006 | -678 | -77 | 11,376 |
| 1995 | 20,962 | 7,104 | -805 | -3,970 | -29,257 | -30,038 | -32,571 | -35,022 | -40,472 | -36,406 | -41,858 | -53,433 |
| 1996 | -57,642 | -40,939 | -41,504 | -34,834 | -6,148 | -2,598 | 3,084 | 6,435 | 11,435 | 9,244 | 7,513 | 15,549 |
| 1997 | 18,479 | 19,537 | 18,859 | 16,125 | 12,752 | 8,775 | 6,069 | 6,829 | 6,578 | 6,212 | 20,677 | 11,251 |
| 1998 | 17,934 | 22,067 | 17,623 | 18,194 | 18,602 | 18,706 | 13,154 | 8,527 | 5,210 | 5,912 | -2,080 | 1,650 |
| 1999 | -21,059 | -26,756 | -25,355 | -37,082 | -35,407 | -37,999 | -39,188 | -37,494 | -32,413 | -29,859 | -26,477 | -26,720 |
| 2000 | -3,683 | 2,681 | 16,664 | 14,611 | 1,962 | 9,111 | 11,490 | 6,616 | -205 | 2,858 | -16,931 | -17,840 |
| 2001 | -2,606 | -11,125 | -12,599 | 11,789 | 29,941 | 22,809 | 14,426 | 9,711 | 11,736 | 2,955 | 52,403 | 47,533 |
| 2002 | 32,524 | 28,108 | 15,368 | -4,648 | -10,103 | 1,438 | 9,549 | 22,225 | 27,226 | 30,904 | -12,080 | -16,539 |
| 2003 | -29,331 | -31,705 | -19,673 | 2,552 | 5,573 | 704 | 4,594 | -1,497 | -6,942 | -4,443 | 384 | 9,140 |
| 2004 | 12,237 | 17,798 | 4,079 | -8,590 | -10,096 | -8,252 | -5,800 | -581 | -3,923 | -5,602 | -5,483 | -13,875 |
| 2005 | -12,409 | -15,891 | -15,692 | -18,226 | -16,923 | -16,874 | -15,566 | -12,636 | -6,217 | -2,977 | 554 | -206 |
| 2006 | 21,068 | 10,640 | 8,752 | 9,365 | 6,660 | 4,759 | 2,465 | 1,616 | 2,447 | 2,417 | -2 | 5,817 |
| 2007 | -17,777 | -13,311 | 2,587 | -997 | 3,100 | 2,170 | 2,275 | -456 | 345 | 1,729 | -4,173 | -10,327 |
| 2008 | -10,119 | -10,314 | -16,298 | -11,648 | -16,497 | -12,560 | -11,731 | -4,832 | -4,967 | -4,248 | 696 | -1,148 |
| 2009 | 1,970 | 6,584 | 2,077 | -1,266 | 3,721 | 1,353 | 2,270 | 1,059 | 2,491 | 3,090 | 7,079 | 6,672 |
| 2010 | 3,657 | 432 | 4,218 | 14,903 | 14,202 | 12,107 | 3,800 | 356 | -1,949 | 439 | 1,249 | 2,321 |
| 2011 | -2,159 | -1,603 | -9,865 | -11,348 | -13,948 | -11,634 | -7,654 | -3,290 | -2,654 | -6,358 | 949 | 1,175 |
| 2012 | 5,715 | 2,772 | 16,963 | 9,218 | 10,993 | 6,246 | 6,133 | 4,934 | 1,813 | 2,511 | -4,163 | -777 |
| 2013 | -1,752 | -7,147 | ||||||||||
| - = 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 |