| 序号 | 时间 (年) |
数据 (亩/人) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2010 | |
| 6 | 2009 | |
| 7 | 2008 | |
| 8 | 2007 | |
| 9 | 2006 | |
| 10 | 2005 | |
| 11 | 2004 | 0.63 |
| 12 | 2003 | 0.64 |
| 13 | 2002 | 0.65 |
| 14 | 2001 | 0.66 |
| 15 | 2000 | 0.67 |
| 16 | 1999 | 0.68 |
| 17 | 1995 | 0.71 |
| 18 | 1990 | 0.79 |
| 19 | 1988 | 0.82 |
