| 年度 | 实际值 |
|---|---|
| 1997 | 22000 |
| 1998 | 23300 |
| 1999 | 20000 |
| 2000 | 26400 |
| 2001 | 28800 |
| 2002 | 277500 |
| 2003 | 290000 |
| 2004 | 300000 |
| 2005 | 312500 |
| 2006 | 319700 |
| 2007 | 322300 |
| 2008 | 323400 |
| 2009 | |
| 2010 | 323100 |
| 2011 | 323400 |
| 2012 | 318600 |
| 2013 | 315600 |
| 2014 | 307800 |
| 2015 | 306000 |
| 2016 | 310000 |
| 2017 | 330000 |
| 2018 | 340000 |