年度 | 实际值 |
---|---|
1993 | 9 |
1994 | 14 |
1995 | 14 |
1996 | 14 |
1997 | |
1998 | |
1999 | |
2000 | 15 |
2001 | 16 |
2002 | 16 |
2003 | 18 |
2004 | 19 |
2005 | 20 |
2006 | 24 |
2007 | 26 |
2008 | 28 |
2009 | |
2010 | 32 |
2011 | 38 |
2012 | 41 |
2013 | 43 |
2014 | 45 |
2015 | 45 |
2016 | 49 |
2017 | 50 |
2018 | 50 |