年度 | 实际值 |
---|---|
1992 | 37.8 |
1993 | |
1994 | |
1995 | 37 |
1996 | |
1997 | |
1998 | |
1999 | 36 |
2000 | 32 |
2001 | 35.6 |
2002 | 35.63 |
2003 | 35.54 |
2004 | 35.43 |
2005 | 35.63 |
2006 | 35.7 |
2007 | 35.8 |
2008 | 35.87 |
2009 | 35.93 |
2010 | 35.95 |
2011 | 36.02 |
2012 | 36.14 |
2013 | 35.55 |
2014 | 35.77 |
2015 | 33.16 |