| 序号 | 时间 (年) |
数据 (万人) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 5.43 |
| 8 | 2013 | 4.99 |
| 9 | 2012 | 4.37 |
| 10 | 2011 | 4.04 |
| 11 | 2010 | 3.44 |
| 12 | 2009 | 3.43 |
| 13 | 2008 | 3.53 |
| 14 | 2007 | 3.79 |
| 15 | 2006 | 3.40 |
| 16 | 2005 | 3.19 |
| 17 | 2004 | 3.09 |
| 18 | 2003 | 2.52 |
| 19 | 2002 | 1.99 |
| 20 | 2001 | 1.74 |
