| Cumulative | Cumulative | ||
| Number | Number | Percent | |
| After 1 Year (Summer 2004) | 0 | 0 | 0.0% |
| After 2 Years (Summer 2005) | 29 | 29 | 7.7% |
| After 3 Years (Summer 2006) | 26 | 55 | 14.5% |
| After 4 Years (Summer 2007) | 24 | 79 | 20.8% |
| After 5 Years (Summer 2008) | 11 | 90 | 23.7% |
| After 6 Years (Summer 2009) | 0 | 90 | 23.7% |
| After 7 Years (Summer 2010) | 0 | 90 | 23.7% |
| More than 7 Years (after Summer 2010) | 0 | 90 | 23.7% |
| Total | 90 |