| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2005 | - | 2 | 4 | 3 | 5 | 3 | 2 | 4 | 4 | 4 | 4 | 4 |
| 2006 | 5 | 4 | 4 | 5 | 4 | 3 | 4 | 4 | 4 | 5 | 4 | 4 |
| 2007 | 3 | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 5 |
| 2008 | 4 | 4 | 5 | 4 | 4 | 5 | 4 | 5 | 4 | 4 | 5 | 4 |
| 2009 | 3 | 4 | 5 | 4 | 5 | 4 | 4 | 5 | 4 | 4 | 5 | 4 |
| 2010 | 5 | 4 | 4 | 4 | 5 | 4 | 4 | 5 | 4 | 5 | 4 | 4 |
| 2011 | 5 | 4 | 4 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 3 | 4 |