| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 17.42 |
| 12 | 2010 | 17.35 |
| 13 | 2009 | 17.82 |
| 14 | 2008 | 18.07 |
| 15 | 2007 | 18.35 |
| 16 | 2006 | 18.95 |
| 17 | 2005 | 19.51 |
| 18 | 2004 | 20.35 |
| 19 | 2003 | 20.75 |
| 20 | 2002 | 21.61 |
| 21 | 2001 | 21.48 |
| 22 | 2000 | 21.56 |
| 23 | 1999 | 21.87 |
| 24 | 1998 | 21.90 |
| 25 | 1997 | 22.08 |
| 26 | 1996 | 22.12 |
| 27 | 1995 | 22.33 |
| 28 | 1994 | 21.98 |
| 29 | 1993 | 22.12 |
| 30 | 1992 | 22.01 |
| 31 | 1991 | 21.98 |
| 32 | 1986 | 19.73 |
| 33 | 1985 | 16.78 |
| 34 | 1983 | 15.28 |
| 35 | 1980 | 18.87 |
| 36 | 1978 | 19.13 |
| 37 | 1977 | 18.94 |
| 38 | 1976 | 19.27 |
| 39 | 1975 | 19.66 |
| 40 | 1974 | 21.64 |
| 41 | 1973 | 24.07 |
| 42 | 1972 | 26.17 |
| 43 | 1971 | 27.67 |
