| Cumulative | Cumulative | ||
| Number | Number | Percent | |
| After 1 Year (Summer 2003) | 8 | 8 | 2.3% |
| After 2 Years (Summer 2004) | 24 | 32 | 9.2% |
| After 3 Years (Summer 2005) | 18 | 50 | 14.4% |
| After 4 Years (Summer 2006) | 10 | 60 | 17.3% |
| After 5 Years (Summer 2007) | 26 | 86 | 24.8% |
| After 6 Years (Summer 2008) | 3 | 89 | 25.6% |
| After 7 Years (Summer 2009) | 0 | 89 | 25.6% |
| More than 7 Years (after Summer 2009) | 0 | 89 | 25.6% |
| Total | 89 |