| 年度 | 实际值 |
|---|---|
| 1984 | 267 |
| 1985 | 324 |
| 1986 | 398 |
| 1987 | 406 |
| 1988 | 513 |
| 1989 | 517 |
| 1990 | 520 |
| 1991 | 568 |
| 1992 | 644 |
| 1993 | 711 |
| 1994 | 1084 |
| 1995 | 1457 |
| 1996 | 1677 |
| 1997 | 1825 |
| 1998 | 2090 |
| 1999 | 2102 |
| 2000 | 2130 |
| 2001 | 2324 |
| 2002 | 2547 |
| 2003 | 2734 |
| 2004 | 2990 |
| 2005 | 3184 |
| 2006 | 3604 |
| 2007 | 4185 |
| 2008 | 4761 |
| 2009 | 5312 |
| 2010 | 6158 |
| 2011 | 7435 |
| 2012 | 8387 |
| 2013 | 9402 |
| 2014 | 11943 |
| 2015 | 13174 |