| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | ||
| 2004 | 3,879 | 3,727 | 4,432 | 4,667 | 5,954 | 6,700 | 6,998 | 6,263 | 5,751 | 5,214 | 3,893 | 3,183 | 60,661 | |
| 2005 | 4,829 | 4,283 | 5,092 | 5,170 | 5,231 | 5,421 | 5,394 | 5,728 | 4,909 | 4,783 | 4,078 | 3,025 | 57,943 | |
| 2006 | 5,599 | 5,214 | 6,053 | 5,878 | 6,264 | 6,060 | 5,484 | 5,880 | 5,253 | 5,125 | 4,043 | 3,196 | 64,049 | |
| 2007 | 5,809 | 5,210 | 6,121 | 5,575 | 5,760 | 5,476 | 5,611 | 5,809 | 4,735 | 5,202 | 4,089 | 3,386 | 62,783 | |
| 2008 | 5,023 | 4,805 | 4,860 | 5,124 | 19,812 | |||||||||
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