| 序号 |
时间(年) |
数据(单位：%) |
| 1 |
2025 |
|
| 2 |
2024 |
|
| 3 |
2023 |
|
| 4 |
2022 |
|
| 5 |
2021 |
|
| 6 |
2020 |
|
| 7 |
2019 |
21.15 |
| 8 |
2018 |
20.82 |
| 9 |
2017 |
20.13 |
| 10 |
2016 |
20.04 |
| 11 |
2015 |
19.75 |
| 12 |
2014 |
19.78 |
| 13 |
2013 |
19.58 |
| 14 |
2012 |
19.97 |
| 15 |
2011 |
20.01 |
| 16 |
2010 |
19.19 |
| 17 |
2009 |
18.84 |
| 18 |
2008 |
19.96 |
| 19 |
2007 |
19.72 |
| 20 |
2006 |
19.46 |
| 21 |
2005 |
18.76 |
| 22 |
2004 |
18.83 |
| 23 |
2003 |
19.26 |
| 24 |
2002 |
19.89 |
| 25 |
2001 |
21.54 |
| 26 |
2000 |
22.88 |
| 27 |
1999 |
22.83 |
| 28 |
1998 |
22.70 |
| 29 |
1997 |
22.57 |
| 30 |
1996 |
22.93 |
| 31 |
1995 |
23.46 |
| 32 |
1994 |
24.02 |
| 33 |
1993 |
23.96 |
| 34 |
1992 |
25.01 |
| 35 |
1991 |
24.84 |
| 36 |
1990 |
24.37 |
| 37 |
1989 |
23.56 |
| 38 |
1988 |
22.88 |
| 39 |
1987 |
22.63 |
| 40 |
1986 |
22.47 |
| 41 |
1985 |
22.60 |
| 42 |
1984 |
23.11 |
| 43 |
1983 |
23.56 |
| 44 |
1982 |
23.33 |
| 45 |
1981 |
24.73 |
| 46 |
1980 |
25.90 |
| 47 |
1979 |
25.20 |
| 48 |
1978 |
24.28 |
| 49 |
1977 |
23.74 |
| 50 |
1976 |
23.46 |
| 51 |
1975 |
23.63 |
| 52 |
1974 |
24.93 |
| 53 |
1973 |
27.69 |
| 54 |
1972 |
29.29 |
| 55 |
1971 |
29.95 |
| 56 |
1970 |
29.25 |
