| 序号 | 时间 (年) |
数据 (万头) |
|---|---|---|
| 1 | 2023 | |
| 2 | 2022 | |
| 3 | 2021 | |
| 4 | 2020 | |
| 5 | 2019 | |
| 6 | 2018 | |
| 7 | 2017 | 4.31 |
| 8 | 2016 | 2.42 |
| 9 | 2015 | 7.36 |
| 10 | 2014 | 15.07 |
| 11 | 2013 | 13.33 |
| 12 | 2012 | 16.42 |
| 13 | 2011 | 14.98 |
| 14 | 2010 | 13.75 |
| 15 | 2009 | 11.03 |
| 16 | 2008 | 9.87 |
| 17 | 2007 | 7.06 |
| 18 | 2006 | 5.97 |
| 19 | 2005 | 7.32 |
| 20 | 2004 | 7.32 |
| 21 | 2003 | 7.14 |
| 22 | 2002 | 7.85 |
| 23 | 2001 | 7.91 |
| 24 | 2000 | 7.43 |
| 25 | 1999 | 8.36 |
| 26 | 1998 | 7.71 |
| 27 | 1997 | 9.22 |
| 28 | 1996 | 7.93 |
| 29 | 1995 | 8.43 |
| 30 | 1994 | 8.87 |
| 31 | 1993 | 9.44 |
| 32 | 1992 | 12.80 |
| 33 | 1991 | 13.91 |
| 34 | 1990 | 15.38 |
| 35 | 1989 | 15.53 |
| 36 | 1988 | 15.21 |
| 37 | 1987 | 16.90 |
| 38 | 1986 | 19.03 |
| 39 | 1985 | 20.25 |
| 40 | 1984 | 18.54 |
| 41 | 1983 | 17.38 |
| 42 | 1982 | 17.71 |
| 43 | 1981 | 17.02 |
| 44 | 1980 | 17.15 |
| 45 | 1979 | 17.26 |
| 46 | 1978 | 14.02 |
