| 序号 | 时间 (年) |
数据 (万人) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 15.58 |
| 8 | 2014 | 16.03 |
| 9 | 2013 | 16.39 |
| 10 | 2012 | 16.97 |
| 11 | 2011 | 17.38 |
| 12 | 2010 | 19.05 |
| 13 | 2009 | 19.35 |
| 14 | 2008 | 19.63 |
| 15 | 2007 | 19.81 |
| 16 | 2006 | 20.03 |
| 17 | 2005 | 20.33 |
| 18 | 2000 | 19.94 |
| 19 | 1995 | 20.04 |
| 20 | 1990 | 19.33 |
| 21 | 1985 | 18.62 |
| 22 | 1980 | 19.81 |
| 23 | 1978 | 18.07 |
