| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 18.72 |
| 8 | 2014 | 20.08 |
| 9 | 2013 | 20.14 |
| 10 | 2012 | 18.25 |
| 11 | 2011 | 18.74 |
| 12 | 2010 | 18.70 |
| 13 | 2009 | 19.17 |
| 14 | 2008 | 19.08 |
| 15 | 2007 | 19.28 |
| 16 | 2006 | 18.07 |
| 17 | 2005 | 17.18 |
| 18 | 2004 | 17.64 |
| 19 | 2003 | 17.22 |
| 20 | 2002 | 16.99 |
| 21 | 2001 | 17.31 |
| 22 | 2000 | 17.36 |
| 23 | 1999 | 18.19 |
| 24 | 1998 | 18.07 |
| 25 | 1997 | 18.36 |
| 26 | 1996 | 18.37 |
| 27 | 1995 | 18.07 |
| 28 | 1994 | 18.38 |
| 29 | 1993 | 17.61 |
| 30 | 1992 | 16.98 |
| 31 | 1991 | 14.46 |
| 32 | 1989 | 14.69 |
| 33 | 1988 | 14.25 |
| 34 | 1987 | 17.20 |
| 35 | 1986 | 16.76 |
| 36 | 1985 | 17.45 |
| 37 | 1984 | 16.39 |
| 38 | 1983 | 17.53 |
| 39 | 1982 | 17.95 |
| 40 | 1979 | 17.32 |
| 41 | 1978 | 16.46 |
| 42 | 1977 | 16.79 |
| 43 | 1976 | 17.56 |
| 44 | 1975 | 17.00 |
| 45 | 1974 | 17.85 |
| 46 | 1972 | 17.70 |
| 47 | 1971 | 16.86 |
| 48 | 1970 | 16.23 |
| 49 | 1969 | 15.51 |
