| Fiscal Year | Rates |
|---|---|
| 2024/2025 | 4.411 |
| 2023/2024 | 3.927 |
| 2022/2023 | 2.170 |
| 2021/2022 | 0.371 |
| 2020/2021 | 0.500 |
| 2019/2020 | 1.934 |
| 2018/2019 | 2.266 |
| 2017/2018 | 1.376 |
| 2016/2017 | 0.754 |
| 2015/2016 | 0.434 |
| 2014/2015 | 0.269 |
| 2013/2014 | 0.249 |
| 2012/2013 | 0.307 |
| 2011/2012 | 0.382 |
| 2010/2011 | 0.495 |
| 2009/2010 | 0.651 |
| 2008/2009 | 2.224 |
| 2007/2008 | 4.325 |
| 2006/2007 | 5.121 |
| 2005/2006 | 3.873 |
| 2004/2005 | 2.256 |
| 2003/2004 | 1.532 |
| 2002/2003 | 2.152 |
| 2001/2002 | 3.445 |
| 2000/2001 | 6.104 |
| 1999/2000 | 5.708 |
| 1998/1999 | 5.344 |
| 1997/1998 | 5.699 |
| 1996/1997 | 5.599 |
| 1995/1996 | 5.706 |
| 1994/1995 | 5.532 |
| 1993/1994 | 4.387 |
| 1992/1993 | 4.707 |
| 1991/1992 | 6.196 |
| 1990/1991 | 8.013 |
| 1989/1990 | 8.655 |
| 1988/1989 | 8.669 |
| 1987/1988 | 7.874 |
| 1986/1987 | 7.435 |
| 1985/1986 | 9.081 |
| 1984/1985 | 10.715 |
| 1983/1984 | 10.408 |
| 1982/1983 | 10.450 |
| 1981/1982 | 12.070 |
| 1980/1981 | 10.780 |
| 1979/1980 | 10.540 |
| 1978/1979 | 8.520 |
| 1977/1978 | 6.700 |
| 1976/1977 | 5.870 |
| 1975/1976 | 6.370 |
| 1974/1975 | 8.620 |
| 1973/1974 | 8.970 |
| 1972/1973 | 5.550 |
| 1971/1972 | 4.880 |
