| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | |
| 8 | 2016 | |
| 9 | 2015 | |
| 10 | 2014 | |
| 11 | 2013 | 2.08 |
| 12 | 2012 | 2.00 |
| 13 | 2011 | 1.98 |
| 14 | 2010 | 1.99 |
| 15 | 2009 | 1.99 |
| 16 | 2008 | 1.90 |
| 17 | 1989 | 1.57 |
| 18 | 1988 | 1.53 |
| 19 | 1987 | 1.44 |
| 20 | 1986 | 1.37 |
| 21 | 1985 | 1.29 |
| 22 | 1984 | 1.26 |
| 23 | 1983 | 1.33 |
| 24 | 1982 | 1.52 |
| 25 | 1981 | 1.56 |
| 26 | 1980 | 1.51 |
| 27 | 1979 | 1.80 |
| 28 | 1978 | 1.84 |
| 29 | 1977 | 1.87 |
| 30 | 1976 | 1.81 |
| 31 | 1975 | 1.64 |
| 32 | 1974 | 1.50 |
| 33 | 1973 | 1.42 |
| 34 | 1972 | 1.46 |
