| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |||
| 2004 | 2,217 | 2,431 | 3,460 | 3,267 | 3,204 | 3,552 | 3,397 | 3,192 | 2,922 | 2,604 | 2,492 | 2,522 | 35,260 | ||
| 2005 | 1,985 | 2,038 | 3,127 | 2,957 | 3,096 | 3,318 | 3,240 | 3,331 | 2,985 | 2,574 | 2,441 | 2,437 | 33,529 | ||
| 2006 | 1,778 | 1,787 | 2,521 | 2,266 | 2,556 | 2,510 | 1,996 | 2,097 | 1,739 | 1,689 | 1,547 | 1,644 | 24,130 | ||
| 2007 | 1,397 | 1,407 | 1,605 | 1,381 | 1,568 | 1,476 | 1,318 | 1,316 | 990 | 974 | 968 | 879 | 15,279 | ||
| 2008 | 983 | 1,098 | 1,478 | 1,794 | 5,353 | ||||||||||
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