Year | Usage in Gallons |
2020 | 595,590,000 |
2019 | 570,031,000 |
2018 | 558,287,000 |
2017 | 503,499,000 |
2016 | 531,958,000 |
2015 | 522,732,000 |
2014 | 525,787,000 |
2013 | 498,228,000 |
2012 | 598,960,000 |
2011 | 537,792,000 |
2010 | 562,681,000 |
2009 | 527,006,000 |
2008 | 616,854,000 |
2007 | 608,719,000 |
2006 | 665,231,000 |
2005 | 642,236,000 |
2004 | 595,130,000 |
2003 | 634,192,000 |
2002 | 766,610,000 |
2001 | 747,911,000 |
2000 | 796,885,000 |
1999 | 729,237,000 |
1998 | 752,701,000 |
1997 | 714,063,000 |
1996 | 746,889,000 |
1995 | 656,145,000 |
1994 | 740,668,000 |
1993 | 674,975,000 |
1992 | 652,712,000 |
1991 | 614,633,000 |
Month | Average |
January | 33,000,000 |
February | 33,000,000 |
March | 31,000,000 |
April | 34,000,000 |
May | 38,000,000 |
June | 57,000,000 |
July | 68,000,000 |
August | 72,000,000 |
September | 67,000,000 |
October | 52,000,000 |
November | 39,000,000 |
December | 34,000,000 |