| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|
2008 |
61 |
102 |
154 |
179 |
206 |
259 |
305 |
344 |
372 |
393 |
418 |
453 |
|
2009 |
45 |
101 |
152 |
180 |
204 |
235 |
269 |
311 |
345 |
372 |
398 |
430 |
| 2010 |
43 |
83 | 126 | 150 | 180 | 201 | 243 | 270 | 293 | 322 | 354 | 396 |
| 2011 | 61 | 118 |
153 |
191 | 222 | 255 | 303 | 342 | 381 | 408 | 428 | 466 |
| 2012 | 59* |
