| 年度 | 实际值 |
|---|---|
| 1993 | 2091 |
| 1994 | 2141 |
| 1995 | 2107 |
| 1996 | 2100 |
| 1997 | 2145 |
| 1998 | 2493 |
| 1999 | 2243 |
| 2000 | 2182 |
| 2001 | 2267 |
| 2002 | 2356 |
| 2003 | 2561 |
| 2004 | 2154 |
| 2005 | 1798 |
| 2006 | 2321 |
| 2007 | 2470 |
| 2008 | 2407 |
| 2009 | |
| 2010 | 2494 |
| 2011 | 2538 |
| 2012 | 2484 |
| 2013 | 2656 |
| 2014 | 2730 |
| 2015 | 2791 |
| 2016 | 2818 |
| 2017 | 2808 |
| 2018 | 3036 |