| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 22.27 |
| 8 | 2014 | 22.80 |
| 9 | 2013 | 24.70 |
| 10 | 2012 | 28.12 |
| 11 | 2011 | 31.43 |
| 12 | 2010 | 33.65 |
| 13 | 2009 | 33.60 |
| 14 | 2008 | 32.97 |
| 15 | 2007 | 29.06 |
| 16 | 2006 | 27.71 |
| 17 | 2005 | 26.96 |
| 18 | 2004 | 26.29 |
| 19 | 2003 | 25.60 |
| 20 | 2002 | 26.97 |
| 21 | 2001 | 26.37 |
| 22 | 2000 | 26.09 |
| 23 | 1999 | 28.29 |
| 24 | 1998 | 28.96 |
| 25 | 1997 | 29.49 |
| 26 | 1996 | 30.28 |
| 27 | 1995 | 30.51 |
| 28 | 1994 | 30.23 |
| 29 | 1993 | 30.00 |
| 30 | 1992 | 30.52 |
| 31 | 1991 | 30.43 |
| 32 | 1989 | 27.31 |
| 33 | 1984 | 32.95 |
| 34 | 1983 | 29.24 |
| 35 | 1979 | 31.23 |
| 36 | 1978 | 27.14 |
| 37 | 1977 | 23.80 |
| 38 | 1976 | 28.94 |
| 39 | 1975 | 19.92 |
| 40 | 1974 | 18.93 |
| 41 | 1973 | 16.82 |
| 42 | 1972 | 18.55 |
| 43 | 1971 | 16.52 |
| 44 | 1970 | 21.28 |
