| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2019 | |
| 2 | 2018 | |
| 3 | 2017 | |
| 4 | 2016 | |
| 5 | 2015 | |
| 6 | 2014 | |
| 7 | 2013 | 0.00 |
| 8 | 2012 | 0.31 |
| 9 | 1992 | 0.03 |
| 10 | 1990 | 0.50 |
| 11 | 1986 | 0.04 |
| 12 | 1984 | 0.15 |
| 13 | 1983 | 1.46 |
| 14 | 1982 | 0.30 |
| 15 | 1981 | 0.24 |
| 16 | 1980 | 2.27 |
| 17 | 1979 | 12.34 |
| 18 | 1978 | 2.74 |
| 19 | 1977 | 0.60 |
| 20 | 1976 | 0.70 |
