年度 | 实际值 |
---|---|
1992 | 24.9 |
1993 | |
1994 | |
1995 | 25.4 |
1996 | |
1997 | |
1998 | |
1999 | 26.7 |
2000 | 27.1 |
2001 | 28 |
2002 | 27.8536 |
2003 | 28.1303 |
2004 | 28.4778 |
2005 | 28.634 |
2006 | 28.5607 |
2007 | 29.6861 |
2008 | 29.8202 |
2009 | 30.6351 |
2010 | 30.9261 |
2011 | 31 |
2012 | 31 |
2013 | |
2014 | 13.95 |
2015 | 32.0132 |