| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 3.54 |
| 8 | 2014 | 3.52 |
| 9 | 2013 | 4.45 |
| 10 | 2012 | 4.78 |
| 11 | 2011 | 4.12 |
| 12 | 2004 | 10.47 |
| 13 | 2003 | 11.89 |
| 14 | 2002 | 13.30 |
| 15 | 1998 | 23.48 |
| 16 | 1997 | 29.14 |
| 17 | 1996 | 27.02 |
| 18 | 1995 | 20.94 |
