| Cumulative | Cumulative | ||
| Number | Number | Percent | |
| After 1 Year (Summer 2006) | 17 | 17 | 8.3% |
| After 2 Years (Summer 2007) | 12 | 29 | 13.9% |
| After 3 Years (Summer 2008) | 11 | 40 | 19.1% |
| After 4 Years (Summer 2009) | 14 | 54 | 25.8% |
| After 5 Years (Summer 2010) | 18 | 72 | 34.4% |
| After 6 Years (Summer 2011) | 3 | 75 | 35.9% |
| After 7 Years (Summer 2012) | 0 | 75 | 35.9% |
| More than 7 Years (after Summer 2012) | 0 | 75 | 35.9% |
| Total | 75 | ||
| NOTE: Data is through Summer 2011 |
