Cluster | Start Date | End Date |
1 | 1/1/2010 | 12/31/2014 |
2 | 1/1/2000 | 12/31/2004 |
3 | 1/1/2000 | 12/31/2004 |
4 | 1/1/2000 | 12/31/2004 |
5 | 1/1/2010 | 12/31/2014 |