| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2023 |
|
| 2 |
2022 |
|
| 3 |
2021 |
|
| 4 |
2020 |
|
| 5 |
2019 |
|
| 6 |
2018 |
|
| 7 |
2017 |
21.13 |
| 8 |
2016 |
20.88 |
| 9 |
2015 |
20.30 |
| 10 |
2014 |
18.83 |
| 11 |
2013 |
18.86 |
| 12 |
2012 |
17.24 |
| 13 |
2011 |
17.33 |
| 14 |
2010 |
18.84 |
| 15 |
2009 |
22.98 |
| 16 |
2008 |
17.45 |
| 17 |
2007 |
19.95 |
| 18 |
2006 |
19.27 |
| 19 |
2005 |
21.19 |
| 20 |
2004 |
19.03 |
| 21 |
2003 |
21.47 |
| 22 |
2002 |
21.41 |
| 23 |
2001 |
21.02 |
| 24 |
2000 |
21.47 |
| 25 |
1999 |
20.90 |
| 26 |
1998 |
21.23 |
| 27 |
1997 |
30.89 |
| 28 |
1996 |
32.86 |
| 29 |
1995 |
31.40 |
| 30 |
1994 |
28.39 |
| 31 |
1993 |
26.70 |
| 32 |
1987 |
27.60 |
| 33 |
1986 |
29.94 |
| 34 |
1985 |
25.88 |
| 35 |
1984 |
22.75 |
| 36 |
1983 |
25.90 |
| 37 |
1982 |
24.63 |
| 38 |
1981 |
25.79 |
| 39 |
1980 |
28.46 |
| 40 |
1979 |
30.46 |
| 41 |
1978 |
32.57 |
| 42 |
1977 |
30.61 |
| 43 |
1976 |
33.82 |
| 44 |
1975 |
25.05 |
| 45 |
1974 |
24.51 |
| 46 |
1973 |
52.30 |
| 47 |
1972 |
51.13 |
| 48 |
1971 |
48.94 |
| 49 |
1970 |
51.79 |
| 50 |
1969 |
52.60 |
| 51 |
1968 |
51.98 |
| 52 |
1967 |
50.11 |
| 53 |
1966 |
50.95 |
| 54 |
1965 |
48.78 |
| 55 |
1964 |
49.85 |
| 56 |
1963 |
50.81 |
| 57 |
1962 |
46.90 |
