Annual comparisons of sales statistics based upon information filed by the electric and gas utilities in each utility's Form 21 ILCC.

• Comparison of Electric Sales Statistics for 1991 and 1990 Published: May 1, 1992
• Comparison of Electric Sales Statistics for 1992 and 1991 Published: May 1, 1993
• Comparison of Electric Sales Statistics for 1993 and 1992 Published: May 1, 1994
• Comparison of Electric Sales Statistics for 1994 and 1993 Published: May 1, 1995
• Comparison of Electric Sales Statistics for 1995 and 1994 Published: May 1, 1996
• Comparison of Electric Sales Statistics for 1996 and 1995 Published: May 1, 1997
• Comparison of Electric Sales Statistics for 1997 and 1996 Published: May 1, 1998
• Comparison of Electric Sales Statistics for 1998 and 1997 Published: May 1, 1999
• Comparison of Electric Sales Statistics for 1999 and 1998 Published: May 1, 2000
• Comparison of Electric Sales Statistics for 2000 and 1999 Published: May 1, 2001
• Comparison of Electric Sales Statistics for 2001 and 2000 Published: June 13, 2002
• Comparison of Electric Sales Statistics for 2002 and 2001 Published: June 19, 2003
• Comparison of Electric Sales Statistics for 2003 and 2002 Published: May 1, 2004
• Comparison of Electric Sales Statistics for 2004 and 2003 Published: July 2, 2008
• Comparison of Electric Sales Statistics for 2005 and 2004 Published: July 9, 2008
• Comparison of Electric Sales Statistics for 2006 and 2005 Published: July 8, 2008
• Comparison of Electric Sales Statistics for 2007 and 2006 Published: June 24, 2008
• Comparison of Electric Sales Statistics for 2008 and 2007 Published: May 29, 2009
• Comparison of Gas Sales Statistics for 1991 and 1990 Published: May 1, 1992
• Comparison of Gas Sales Statistics for 1992 and 1991 Published: May 1, 1993
• Comparison of Gas Sales Statistics for 1993 and 1992 Published: May 1, 1994
• Comparison of Gas Sales Statistics for 1994 and 1993 Published: May 1, 1995
• Comparison of Gas Sales Statistics for 1995 and 1994 Published: May 1, 1996
• Comparison of Gas Sales Statistics for 1996 and 1995 Published: May 1, 1997
• Comparison of Gas Sales Statistics for 1997 and 1996 Published: May 1, 1998
• Comparison of Gas Sales Statistics for 1998 and 1997 Published: May 1, 1999
• Comparison of Gas Sales Statistics for 1999 and 1998 Published: May 1, 2000
• Comparison of Gas Sales Statistics for 2000 and 1999 Published: May 1, 2001
• Comparison of Gas Sales Statistics for 2001 and 2000 Published: June 13, 2002
• Comparison of Gas Sales Statistics for 2002 and 2001 Published: June 23, 2003
• Comparison of Gas Sales Statistics for 2003 and 2002 Published: May 1, 2004
• Comparison of Gas Sales Statistics for 2004 and 2003 Published: May 16, 2005
• Comparison of Gas Sales Statistics for 2005 and 2004 Published: May 23, 2006
• Comparison of Gas Sales Statistics for 2007 and 2006 Published: June 24, 2008
• Comparison of Gas Sales Statistics for 2008 and 2007 Published: October 3, 2009