| 年度 | 实际值 |
|---|---|
| 1997 | 3741338 |
| 1998 | 3822769 |
| 1999 | 3871498 |
| 2000 | 4648889 |
| 2001 | 4788356 |
| 2002 | 5090762 |
| 2003 | 5112543 |
| 2004 | 6246496 |
| 2005 | 7307239 |
| 2006 | 8187385 |
| 2007 | 10028501 |
| 2008 | 12778611 |
| 2009 | 13372200 |
| 2010 | 16660575 |
| 2011 | 20586024 |
| 2012 | 23032043 |
| 2013 | 25625051 |
| 2014 | 27418168 |
| 2015 | 28134967 |