| 序号 | 时间 (年) |
数据 (万头) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 67.31 |
| 8 | 2014 | 67.79 |
| 9 | 2013 | 68.87 |
| 10 | 2012 | 68.46 |
| 11 | 2011 | 69.77 |
| 12 | 2010 | 49.70 |
| 13 | 2009 | 70.28 |
| 14 | 2008 | 70.83 |
| 15 | 2007 | 63.13 |
| 16 | 2006 | 100.21 |
| 17 | 2005 | 75.63 |
| 18 | 2004 | 107.84 |
| 19 | 2003 | 97.78 |
| 20 | 2002 | 109.28 |
| 21 | 2001 | 109.65 |
| 22 | 2000 | 111.44 |
| 23 | 1999 | 114.59 |
| 24 | 1998 | 117.06 |
| 25 | 1997 | 117.82 |
| 26 | 1995 | 103.74 |
| 27 | 1990 | 125.27 |
| 28 | 1985 | 118.42 |
