| 序号 | 时间 (年) |
数据 (万人) |
|---|---|---|
| 1 | 2020 | |
| 2 | 2019 | |
| 3 | 2018 | |
| 4 | 2017 | |
| 5 | 2016 | |
| 6 | 2015 | |
| 7 | 2014 | 20.31 |
| 8 | 2012 | 20.12 |
| 9 | 2011 | 19.71 |
| 10 | 2010 | 19.54 |
| 11 | 2009 | 19.32 |
| 12 | 2008 | 18.92 |
| 13 | 2007 | 18.83 |
| 14 | 2006 | 18.67 |
| 15 | 2005 | 18.81 |
| 16 | 2004 | 18.63 |
| 17 | 2003 | 17.92 |
| 18 | 2002 | 17.47 |
| 19 | 2001 | 17.41 |
| 20 | 2000 | 17.28 |
