| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 25.18 | 百分比 | 2026-9 |
| 2025/2026 | 21.24 | 百分比 | 2026-9 |
| 2024/2025 | 17.67 | 百分比 | 2026-9 |
| 2023/2024 | 27.51 | 百分比 | 2026-9 |
| 2022/2023 | 18.15 | 百分比 | 2026-9 |
| 2021/2022 | 32.56 | 百分比 | 2026-9 |
| 2020/2021 | 25.74 | 百分比 | 2026-9 |
| 2019/2020 | 32.03 | 百分比 | 2026-9 |
| 2018/2019 | 25.24 | 百分比 | 2026-9 |
| 2017/2018 | 25.47 | 百分比 | 2026-9 |
| 2016/2017 | 28.78 | 百分比 | 2026-9 |
| 2015/2016 | 35.98 | 百分比 | 2026-9 |
| 2014/2015 | 47.04 | 百分比 | 2026-9 |
| 2013/2014 | 50.44 | 百分比 | 2026-9 |
| 2012/2013 | 56.61 | 百分比 | 2026-9 |
| 2011/2012 | 63.68 | 百分比 | 2026-9 |
| 2010/2011 | 77 | 百分比 | 2026-9 |
| 2009/2010 | 61 | 百分比 | 2026-9 |
| 2008/2009 | 60 | 百分比 | 2026-9 |
| 2007/2008 | 66 | 百分比 | 2026-9 |
| 2006/2007 | 68 | 百分比 | 2026-9 |
| 2005/2006 | 63 | 百分比 | 2026-9 |
| 2004/2005 | 78 | 百分比 | 2026-9 |
| 2003/2004 | 76 | 百分比 | 2026-9 |
| 2002/2003 | 52 | 百分比 | 2026-9 |
| 2001/2002 | 45 | 百分比 | 2026-9 |
| 2000/2001 | 39 | 百分比 | 2026-9 |
| 1999/2000 | 50 | 百分比 | 2026-9 |
| 1998/1999 | 63 | 百分比 | 2026-9 |
| 1997/1998 | 54 | 百分比 | 2026-9 |
| 1996/1997 | 57 | 百分比 | 2026-9 |
| 1995/1996 | 73.333 | 百分比 | 2026-9 |
| 1994/1995 | 59.747 | 百分比 | 2026-9 |
| 1993/1994 | 61.846 | 百分比 | 2026-9 |
| 1992/1993 | 52.8 | 百分比 | 2026-9 |
| 1991/1992 | 53.793 | 百分比 | 2026-9 |
| 1990/1991 | 59.737 | 百分比 | 2026-9 |
| 1989/1990 | 65.495 | 百分比 | 2026-9 |
| 1988/1989 | 64.108 | 百分比 | 2026-9 |
| 1987/1988 | 64.667 | 百分比 | 2026-9 |
| 1986/1987 | 57.108 | 百分比 | 2026-9 |
| 1985/1986 | 59.6 | 百分比 | 2026-9 |
| 1984/1985 | 58.889 | 百分比 | 2026-9 |
| 1983/1984 | 69.492 | 百分比 | 2026-9 |
| 1982/1983 | 43.529 | 百分比 | 2026-9 |
| 1981/1982 | 71.294 | 百分比 | 2026-9 |
| 1980/1981 | 65.227 | 百分比 | 2026-9 |
| 1979/1980 | 52.222 | 百分比 | 2026-9 |
| 1978/1979 | 58.933 | 百分比 | 2026-9 |
| 1977/1978 | 49.412 | 百分比 | 2026-9 |
| 1976/1977 | 48.485 | 百分比 | 2026-9 |
| 1975/1976 | 52.394 | 百分比 | 2026-9 |
| 1974/1975 | 61.707 | 百分比 | 2026-9 |
| 1973/1974 | 62.588 | 百分比 | 2026-9 |
| 1972/1973 | 59.506 | 百分比 | 2026-9 |
| 1971/1972 | 58.105 | 百分比 | 2026-9 |
| 1970/1971 | 57.143 | 百分比 | 2026-9 |
| 1969/1970 | 55.142 | 百分比 | 2026-9 |
| 1968/1969 | 57.292 | 百分比 | 2026-9 |
| 1967/1968 | 66.452 | 百分比 | 2026-9 |
| 1966/1967 | 50.556 | 百分比 | 2026-9 |
| 1965/1966 | 56.613 | 百分比 | 2026-9 |
| 1964/1965 | 60.625 | 百分比 | 2026-9 |
| 1963/1964 | 61.791 | 百分比 | 2026-9 |
| 1962/1963 | 58.273 | 百分比 | 2026-9 |
| 1961/1962 | 59.159 | 百分比 | 2026-9 |
| 1960/1961 | 56.452 | 百分比 | 2026-9 |