年度 | 实际值 |
---|---|
1995 | 29.3 |
1996 | 29.4 |
1997 | 38.45 |
1998 | 34 |
1999 | 32.8 |
2000 | 33.2 |
2001 | 33.87 |
2002 | 35.2 |
2003 | 32.91 |
2004 | 32.38 |
2005 | 32.35 |
2006 | 32.8 |
2007 | 33.09 |
2008 | 31.57 |
2009 | |
2010 | 32.09 |
2011 | 29.02 |
2012 | 33.43 |
2013 | |
2014 | 36.76 |
2015 | 39.02 |
2016 | 41.71 |
2017 | 47.33 |
2018 | 49.43 |