| 序号 | 时间 (年) |
数据 (万人) |
|---|---|---|
| 1 | 2013 | |
| 2 | 2011 | |
| 3 | 2010 | |
| 4 | 2009 | |
| 5 | 2007 | |
| 6 | 2006 | |
| 7 | 2004 | 0.01 |
| 8 | 2003 | 0.01 |
| 9 | 2002 | 0.01 |
| 10 | 2001 | 0.01 |
| 11 | 2000 | 0.01 |
| 12 | 1999 | 0.01 |
| 13 | 1997 | 2.34 |
| 14 | 1996 | 2.47 |
| 15 | 1995 | 3.04 |
| 16 | 1994 | 3.50 |
| 17 | 1993 | 3.17 |
| 18 | 1992 | 2.98 |
| 19 | 1991 | 2.83 |
| 20 | 1990 | 2.87 |
