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| Illinois Price of Natural Gas Delivered to Residential Consumers (Dollars per Thousand Cubic Feet) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | 4.70 | 4.96 | 5.08 | 4.99 | 5.11 | 5.60 | 5.85 | 6.43 | 5.81 | 5.00 | 4.56 | 4.54 |
| 1990 | 4.79 | 5.30 | 5.02 | 4.92 | 5.22 | 5.84 | 6.21 | 6.20 | 5.71 | 4.93 | 4.73 | 4.84 |
| 1991 | 4.94 | 4.98 | 4.72 | 5.10 | 5.67 | 6.31 | 6.54 | 6.54 | 5.50 | 4.90 | 4.48 | 4.51 |
| 1992 | 4.66 | 4.76 | 4.33 | 4.68 | 5.52 | 6.45 | 6.91 | 6.87 | 6.37 | 5.60 | 5.42 | 5.14 |
| 1993 | 5.08 | 5.02 | 4.88 | 5.63 | 6.98 | 7.64 | 7.88 | 8.26 | 7.16 | 6.12 | 5.36 | 5.21 |
| 1994 | 5.11 | 5.26 | 5.66 | 6.23 | 6.69 | 7.47 | 7.54 | 7.70 | 7.08 | 5.56 | 4.66 | 4.80 |
| 1995 | 4.53 | 4.64 | 4.44 | 4.60 | 5.72 | 6.57 | 6.05 | 6.97 | 6.07 | 4.82 | 4.10 | 4.18 |
| 1996 | 4.24 | 4.55 | 4.91 | 5.51 | 6.76 | 8.21 | 8.43 | 9.26 | 8.14 | 5.93 | 5.05 | 5.13 |
| 1997 | 6.15 | 6.50 | 5.28 | 5.10 | 5.43 | 7.94 | 7.84 | 7.88 | 8.01 | 6.05 | 5.65 | 5.38 |
| 1998 | 4.88 | 4.92 | 4.95 | 5.81 | 7.96 | 8.11 | 8.71 | 8.18 | 8.08 | 5.98 | 5.02 | 4.77 |
| 1999 | 4.43 | 4.59 | 4.60 | 5.24 | 7.62 | 8.07 | 8.80 | 9.41 | 8.44 | 6.87 | 6.27 | 5.36 |
| 2000 | 5.11 | 5.31 | 5.70 | 6.22 | 8.58 | 9.85 | 11.16 | 10.81 | 10.53 | 10.12 | 8.70 | 8.74 |
| 2001 | 11.87 | 11.34 | 9.63 | 9.29 | 10.36 | 10.34 | 9.42 | 9.40 | 7.64 | 5.25 | 5.45 | 5.10 |
| 2002 | 5.13 | 5.08 | 5.12 | 5.70 | 8.00 | 10.14 | 10.41 | 10.21 | 9.65 | 7.50 | 7.22 | 6.94 |
| 2003 | 7.09 | 7.38 | 10.20 | 9.65 | 10.77 | 12.22 | 12.83 | 12.17 | 11.21 | 9.02 | 8.42 | 7.91 |
| 2004 | 8.58 | 8.35 | 8.35 | 9.42 | 11.09 | 12.50 | 13.54 | 12.84 | 12.64 | 9.99 | 10.15 | 9.46 |
| 2005 | 9.50 | 9.33 | 9.06 | 11.37 | 12.25 | 13.42 | 13.94 | 14.67 | 16.67 | 15.62 | 14.74 | 13.62 |
| 2006 | 13.64 | 12.34 | 10.60 | 10.08 | 10.77 | 11.87 | 12.24 | 12.65 | 12.35 | 9.80 | 9.08 | 9.71 |
| 2007 | 9.84 | 9.76 | 10.41 | 11.52 | 12.71 | 15.14 | 15.45 | 15.02 | 14.34 | 12.39 | 10.71 | 9.81 |
| 2008 | 9.65 | 10.37 | 11.63 | 12.92 | 15.57 | 18.45 | 22.09 | 21.80 | 18.62 | 14.49 | 12.76 | 10.63 |
| 2009 | 9.39 | 9.11 | 8.16 | 7.43 | 9.75 | 11.78 | 14.07 | 14.37 | 13.16 | 9.01 | 8.59 | 7.40 |
| 2010 | 8.26 | 8.97 | 9.32 | 9.87 | 11.36 | 14.13 | 16.62 | 16.73 | 15.76 | 12.07 | 8.84 | 7.36 |
| 2011 | 7.27 | 7.44 | 7.85 | 8.43 | 9.73 | 12.51 | 16.10 | 16.16 | 14.69 | 11.21 | 8.80 | |
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 1/30/2012 |
| Next Release Date: 2/29/2012 |