| 1/1/2005 | AFD: 17.0 SD: 3.5 CV: 20.6 %>30: 1.0 | |
| 1/1/2006 | AFD: 17.0 SD: 3.3 CV:19.4 %>30: 0.4 | |
| 1/1/2007 | AFD 17.1, SD 3.3, CV 19.3, %<30 0.4 | |
| 1/1/2008 | AFD 17.1, SD 3.5, CV 20.5, %<30 0.5 | |
| 1/1/2009 | AFD 17.6, SD 3.2, CV 18.1, %<30 0.2 | |
| 1/1/2010 | AFD 16.6, SD 3.3, CV 19.9, %<30 0.5 | |