| 序号 |
时间(年) |
数据(单位：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 |
