| 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | ||||
| Clearwater | 0.3179 | 0.5317 | 1.8188 | 1.6027 | 1.5677 | 0.9363 | 0.2368 | 0.2381 | |||
| Idaho | 1.2107 | 2.7927 | 2.3322 | 1.2641 | 0.9671 | 0.8429 | 1.1105 | 1.4922 | |||
| Latah | 3.1089 | 3.1362 | 1.6530 | 1.3842 | 1.0019 | 0.7541 | 1.1074 | 0.6840 | |||
| Lewis | 1.4989 | 2.7295 | 0.5006 | 0.7608 | 0.8006 | 0.0000 | 1.3437 | 1.6009 | |||
| Nez Perce | 8.4167 | 6.8694 | 5.3200 | 4.6867 | 4.5442 | 3.2349 | 4.4198 | 2.7056 | |||