| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Ada | 6.5687 | 5.5617 | 4.2232 | 3.6238 | 3.7753 | 3.3714 | 3.2375 | 3.1831 |
| Boise | 0.8163 | 0.3967 | 0.1953 | 0.3766 | 0.0000 | 0.2853 | 0.7075 | 0.0000 |
| Elmore | 4.0657 | 2.9581 | 1.6562 | 1.7169 | 1.3388 | 1.2690 | 2.7475 | 1.5932 |
| Valley | 3.8959 | 3.2194 | 1.2484 | 2.6724 | 1.9605 | 1.1664 | 0.7972 | 0.3874 |