| 年度 | 实际值 |
|---|---|
| 1992 | 1485 |
| 1993 | 8842 |
| 1994 | 3964 |
| 1995 | 4227 |
| 1996 | 4538 |
| 1997 | 4774 |
| 1998 | 5797 |
| 1999 | 5627 |
| 2000 | 17724 |
| 2001 | 29630 |
| 2002 | 34528 |
| 2003 | 36993 |
| 2004 | 43552 |
| 2005 | 50350 |
| 2006 | 61414 |
| 2007 | 98486 |
| 2008 | 116568 |
| 2009 | 133329 |
| 2010 | 146518 |
| 2011 | 178592 |
| 2012 | 293502 |
| 2013 | 257057 |
| 2014 | 266351 |
| 2015 | 288870 |
| 2016 | 299546 |
| 2017 | 305802 |
| 2018 | 284414 |