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| Percent of Industrial Natural Gas Deliveries in Iowa Represented by the Price (Percent) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001 | 9.5 | 10.3 | 7.4 | 5.5 | 6.3 | 3.3 | 6.0 | 4.5 | 5.4 | 7.8 | 10.9 | 9.9 |
| 2002 | 8.5 | 5.3 | 8.3 | 6.1 | 4.9 | 5.4 | 5.4 | 5.2 | 5.6 | 10.4 | 12.8 | 10.2 |
| 2003 | 10.3 | 8.9 | 9.3 | 6.7 | 5.2 | 6.0 | 5.5 | 5.6 | 6.3 | 8.8 | 10.6 | 9.1 |
| 2004 | 10.4 | 8.9 | 8.8 | 5.7 | 4.9 | 5.3 | 4.0 | 4.8 | 5.1 | 8.4 | 16.2 | 12.9 |
| 2005 | 11.8 | 9.6 | 9.8 | 7.7 | 7.8 | 8.0 | 8.8 | 8.3 | 9.1 | 11.5 | 12.5 | 10.7 |
| 2006 | 10.3 | 9.5 | 9.6 | 6.1 | 7.4 | 6.4 | 5.7 | 6.7 | 7.1 | 9.4 | 11.9 | 10.2 |
| 2007 | 8.9 | 8.1 | 6.4 | 6.1 | 5.8 | 5.2 | 4.2 | 5.0 | 5.8 | 6.6 | 7.0 | 7.5 |
| 2008 | 7.9 | 6.5 | 5.8 | 5.0 | 6.0 | 5.0 | 4.6 | 5.0 | 5.1 | 7.2 | 9.1 | 10.2 |
| 2009 | 6.9 | 7.2 | 6.4 | 4.7 | 4.3 | 4.6 | 4.5 | 4.4 | 4.3 | 7.3 | 9.4 | 10.2 |
| 2010 | 9.3 | 7.6 | 5.7 | 4.9 | 4.2 | 4.3 | 4.4 | 5.5 | 5.6 | 5.0 | 5.5 | 6.5 |
| 2011 | 6.5 | 6.5 | 5.5 | 5.3 | 4.6 | 5.1 | 4.2 | 4.4 | 5.9 | 5.6 | 6.2 | 5.8 |
| 2012 | 5.8 | 5.9 | 4.8 | 3.9 | 3.9 | 4.4 | 4.1 | 5.2 | 6.2 | 6.6 | 5.9 | 6.5 |
| 2013 | NA | 6.0 | ||||||||||
| - = 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 |