| 序号 | 时间 (年) |
数据 (万人) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 12.39 |
| 8 | 2013 | 16.00 |
| 9 | 2012 | 17.36 |
| 10 | 2011 | 19.58 |
| 11 | 2010 | 18.19 |
| 12 | 2009 | 20.22 |
| 13 | 2008 | 21.31 |
| 14 | 2007 | 21.13 |
| 15 | 2006 | 21.60 |
| 16 | 2005 | 22.03 |
| 17 | 2004 | 20.16 |
| 18 | 2003 | 22.82 |
| 19 | 2002 | 21.28 |
| 20 | 2001 | 17.19 |
| 21 | 2000 | 15.59 |
| 22 | 1999 | 16.73 |
| 23 | 1995 | 14.47 |
| 24 | 1990 | 6.27 |
