| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2019 | |
| 2 | 2018 | |
| 3 | 2017 | |
| 4 | 2016 | |
| 5 | 2015 | |
| 6 | 2014 | |
| 7 | 2013 | |
| 8 | 2012 | |
| 9 | 2011 | |
| 10 | 2010 | |
| 11 | 2009 | 22.48 |
| 12 | 2008 | 19.40 |
| 13 | 2007 | 18.82 |
| 14 | 2006 | 16.90 |
| 15 | 2005 | 19.72 |
| 16 | 1991 | 14.35 |
| 17 | 1990 | 19.12 |
| 18 | 1989 | 17.10 |
| 19 | 1988 | 17.02 |
| 20 | 1987 | 17.88 |
| 21 | 1986 | 16.98 |
| 22 | 1985 | 17.92 |
| 23 | 1984 | 16.65 |
| 24 | 1983 | 15.99 |
| 25 | 1982 | 16.91 |
| 26 | 1981 | 17.91 |
| 27 | 1980 | 15.36 |
| 28 | 1979 | 14.80 |
| 29 | 1978 | 14.38 |
| 30 | 1977 | 14.38 |
| 31 | 1976 | 14.23 |
| 32 | 1975 | 13.12 |
| 33 | 1974 | 11.32 |
| 34 | 1973 | 9.21 |
| 35 | 1972 | 8.03 |
| 36 | 1971 | 6.76 |
| 37 | 1970 | 7.29 |
| 38 | 1969 | 6.18 |
| 39 | 1968 | 5.72 |
| 40 | 1967 | 5.37 |
| 41 | 1966 | 4.73 |
| 42 | 1965 | 3.66 |
| 43 | 1964 | 4.63 |
| 44 | 1963 | 6.59 |
| 45 | 1962 | 6.88 |
