| 年度 | 实际值 |
|---|---|
| 1997 | 268600 |
| 1998 | 203800 |
| 1999 | 180000 |
| 2000 | 176000 |
| 2001 | 176700 |
| 2002 | 162600 |
| 2003 | 138900 |
| 2004 | 130100 |
| 2005 | 144200 |
| 2006 | 143300 |
| 2007 | 137900 |
| 2008 | 139400 |
| 2009 | |
| 2010 | 167200 |
| 2011 | 196500 |
| 2012 | 196500 |
| 2013 | 226700 |
| 2014 | 233100 |
| 2015 | 19.66 |
| 2016 | 160000 |
| 2017 | 190000 |
| 2018 | 170000 |