| 年度 | 实际值 |
|---|---|
| 1992 | 2185 |
| 1993 | 1786 |
| 1994 | 2331 |
| 1995 | 2454 |
| 1996 | 2492 |
| 1997 | 2310 |
| 1998 | 2340 |
| 1999 | 2368 |
| 2000 | 2439 |
| 2001 | 2468 |
| 2002 | 2506 |
| 2003 | 2208 |
| 2004 | 1680.11 |
| 2005 | 1700.18 |
| 2006 | 1413.93 |
| 2007 | 1426.13 |
| 2008 | 1437.4 |
| 2009 | |
| 2010 | 658.49 |
| 2011 | 1455.92 |
| 2012 | 1459.61 |
| 2013 | 1405 |
| 2014 | 1380.79 |
| 2015 | 1381.58 |