| 年度 | 实际值 |
|---|---|
| 1994 | 20600 |
| 1995 | 20900 |
| 1996 | 20000 |
| 1997 | 24200 |
| 1998 | 25200 |
| 1999 | 20000 |
| 2000 | 24300 |
| 2001 | 57400 |
| 2002 | 54500 |
| 2003 | 60000 |
| 2004 | 57700 |
| 2005 | 55800 |
| 2006 | 57800 |
| 2007 | 59700 |
| 2008 | 61300 |
| 2009 | 62400 |
| 2010 | 66800 |
| 2011 | 72100 |
| 2012 | 74100 |
| 2013 | 75900 |
| 2014 | 77100 |
| 2015 | 79200 |
| 2016 | 7.8 |