| 年度 | 实际值 |
|---|---|
| 1997 | 24400 |
| 1998 | 26600 |
| 1999 | 200000 |
| 2000 | 224100 |
| 2001 | 242700 |
| 2002 | 275500 |
| 2003 | 310000 |
| 2004 | 32 |
| 2005 | 339100 |
| 2006 | 339600 |
| 2007 | 321200 |
| 2008 | 306300 |
| 2009 | |
| 2010 | 253400 |
| 2011 | 225300 |
| 2012 | 195000 |
| 2013 | 182000 |
| 2014 | 174700 |
| 2015 | 168600 |
| 2016 | 170000 |
| 2017 | 160000 |
| 2018 | 170000 |