| Cumulative | Cumulative | ||
| Number | Number | Percent | |
| After 3 Years (Summer 2008) | 164 | 164 | 33.4% |
| After 4 Years (Summer 2009) | 74 | 238 | 48.5% |
| After 5 Years (Summer 2010) | 43 | 281 | 57.2% |
| After 6 Years (Summer 2011) | 10 | 291 | 59.3% |
| After 7 Years (Summer 2012) | 0 | 291 | 59.3% |
| More than 7 Years (after Summer 2012) | 0 | 291 | 59.3% |
| Total | 291 | ||
| NOTE: Data is through August 2011. |
