| 年度 | 实际值 |
|---|---|
| 1997 | 37900 |
| 1998 | 37500 |
| 1999 | 40000 |
| 2000 | 44731 |
| 2001 | 49100 |
| 2002 | 133200 |
| 2003 | 140000 |
| 2004 | 140000 |
| 2005 | 135200 |
| 2006 | 133300 |
| 2007 | 131900 |
| 2008 | 129800 |
| 2009 | |
| 2010 | 128000 |
| 2011 | 119200 |
| 2012 | 115500 |
| 2013 | 115100 |
| 2014 | 115700 |
| 2015 | 135800 |
| 2016 | 140000 |
| 2017 | 140000 |
| 2018 | 150000 |