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| Percent of Commercial Natural Gas Deliveries in Washington Represented by the Price (Percent) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | 95.5 | 94.8 | 96.9 | 93.2 | 93.0 | 89.7 | 87.0 | 92.6 | 87.3 | 93.0 | 93.6 | 96.5 |
| 1990 | 96.2 | 95.9 | 93.2 | 92.1 | 90.9 | 88.9 | 88.3 | 88.4 | 90.1 | 91.7 | 95.7 | 96.5 |
| 1991 | 97.8 | 94.9 | 94.3 | 93.2 | 91.2 | 90.5 | 88.3 | 87.2 | 85.6 | 85.2 | 88.7 | 92.1 |
| 1992 | 92.1 | 89.0 | 88.7 | 85.5 | 83.5 | 80.7 | 78.5 | 80.3 | 81.6 | 83.4 | 86.8 | 92.3 |
| 1993 | 93.8 | 93.2 | 93.9 | 93.6 | 90.8 | 89.8 | 90.5 | 90.4 | 90.6 | 94.8 | 97.4 | 98.0 |
| 1994 | 97.6 | 97.6 | 97.6 | 97.4 | 92.1 | 92.1 | 92.4 | 91.7 | 94.4 | 93.8 | 94.1 | 94.7 |
| 1995 | 94.3 | 94.0 | 94.2 | 92.6 | 91.8 | 91.3 | 90.8 | 90.7 | 87.4 | 87.9 | 88.7 | 89.7 |
| 1996 | 89.1 | 89.8 | 87.6 | 84.4 | 84.4 | 82.0 | 80.0 | 80.1 | 81.5 | 82.7 | 84.6 | 87.4 |
| 1997 | 92.4 | 91.7 | 91.2 | 89.3 | 87.7 | 87.0 | 86.2 | 87.7 | 78.8 | 90.6 | 54.4 | 93.5 |
| 1998 | 93.0 | 87.0 | 88.7 | 84.1 | 80.7 | 80.4 | 82.1 | 84.0 | 86.0 | 85.8 | 85.0 | 88.3 |
| 1999 | 91.5 | 90.3 | 90.5 | 88.0 | 87.3 | 83.9 | 83.5 | 83.8 | 87.9 | 90.7 | 89.7 | 91.4 |
| 2000 | 96.0 | 95.5 | 96.0 | 94.7 | 93.0 | 92.0 | 92.1 | 91.5 | 91.9 | 93.6 | 76.8 | 95.4 |
| 2001 | 95.1 | 94.8 | 94.8 | 96.0 | 90.0 | 91.6 | 89.9 | 87.4 | 88.3 | 93.8 | 93.5 | 97.3 |
| 2002 | 77.8 | 95.0 | 94.9 | 94.0 | 94.0 | 92.4 | 86.3 | 84.4 | 84.0 | 87.5 | 91.5 | 92.0 |
| 2003 | 89.4 | 89.7 | 89.7 | 88.6 | 85.9 | 83.8 | 82.6 | 82.2 | 83.6 | 85.3 | 89.9 | 90.5 |
| 2004 | 91.7 | 89.8 | 89.8 | 86.2 | 84.7 | 84.4 | 83.2 | 82.5 | 85.9 | 86.5 | 89.9 | 91.6 |
| 2005 | 91.4 | 89.4 | 89.7 | 88.7 | 84.8 | 84.6 | 83.1 | 83.4 | 84.9 | 87.4 | 90.4 | 91.9 |
| 2006 | 89.5 | 91.1 | 91.0 | 87.3 | 85.7 | 84.0 | 83.4 | 84.2 | 84.7 | 88.9 | 90.7 | 91.8 |
| 2007 | 91.8 | 89.7 | 90.3 | 88.0 | 86.1 | 84.5 | 83.8 | 84.4 | 85.3 | 89.4 | 90.8 | 91.9 |
| 2008 | 91.2 | 90.3 | 89.8 | 88.8 | 86.3 | 85.8 | 83.6 | 84.1 | 84.8 | 88.5 | 92.2 | 90.6 |
| 2009 | 90.9 | 90.1 | 91.1 | 86.6 | 85.5 | 83.1 | 82.1 | 82.2 | 83.4 | 88.4 | 89.1 | 92.1 |
| 2010 | 88.9 | 89.3 | 89.1 | 87.3 | 85.7 | 84.2 | 82.3 | 83.0 | 84.2 | 86.7 | 89.8 | 90.8 |
| 2011 | 90.4 | 89.8 | 89.8 | 87.9 | 86.0 | 84.4 | 82.7 | 83.0 | 82.8 | 87.9 | 90.4 | 90.9 |
| 2012 | 91.3 | 89.9 | 90.3 | 86.5 | 84.9 | 82.9 | 80.6 | 80.5 | 79.1 | 85.3 | 88.6 | 89.7 |
| 2013 | 90.6 | 87.9 | ||||||||||
| - = 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 |