| Year | Bond Amount | Approval |
|---|---|---|
| 2007 | $692.67 million | Passed |
| 2004 | $439 million | Passed |
| 2001 | $495 million | Passed |
| 1998 | $224 million | Passed |
| 1995 | $98 million | Passed |
| 1992 | $224 million | Failed |
| 1988 | $115 million | Passed |
| 1985 | $61.5 million | Passed |
| 1981 | $48.5 million | Passed |
| 1978 | $25 million | Passed |
| 1973 | $31 million | Passed |
| 1972 | $6.8 million | Passed |
