Monthly average of 2000 = 100
Graphic Version | Excel | CSV
| Year | Month | Systemwide |
|---|---|---|
| 2009 | Feb | 73.3 |
| 2009 | Mar | 79.4 |
| 2009 | Apr | 80.7 |
| 2009 | May | 79.8 |
| 2009 | Jun | 84.3 |
| 2009 | Jul | 86.5 |
| 2009 | Aug | 85.0 |
| 2009 | Sep | 79.8 |
| 2009 | Oct | 82.2 |
| 2009 | Nov | 78.9 |
| 2009 | Dec | 80.3 |
| 2010 | Jan | 75.6 |
| 2010 | Feb | 76.5 |
| 2010 | Mar | 82.7 |
| 2010 | Apr | 81.7 |
| 2010 | May | 82.3 |
| 2010 | Jun | 86.2 |
| 2010 | Jul | 86.9 |
| 2010 | Aug | 85.4 |
| 2010 | Sep | 81.0 |
| 2010 | Oct | 83.1 |
| 2010 | Nov | 80.4 |
| 2010 | Dec | 80.7 |
| 2011 | Jan | 76.5 |