Schedule
| TaxYear | Percentage |
|---|---|
| 1978-79 | 545.9 |
| 1979-80 | 470.1 |
| 1980-81 | 376.3 |
| 1981-82 | 298.9 |
| 1982-83 | 262.3 |
| 1983-84 | 236.4 |
| 1984-85 | 211.5 |
| 1985-86 | 192.2 |
| 1986-87 | 168.3 |
| 1987-88 | 149.8 |
| 1988-89 | 129.8 |
| 1989-90 | 107.4 |
| 1990-91 | 93.3 |
| 1991-92 | 75.6 |
| 1992-93 | 64.9 |
| 1993-94 | 57.0 |
| 1994-95 | 52.3 |
| 1995-96 | 45.9 |
| 1996-97 | 41.9 |
| 1997-98 | 35.1 |
| 1998-99 | 29.2 |
| 1999-2000 | 24.0 |
| 2000-2001 | 16.6 |
| 2001-2002 | 12.2 |
| 2002-2003 | 7.5 |
| 2003-2004 | 3.8 |