年度 | 实际值 |
---|---|
1995 | 38.3 |
1996 | 36.2 |
1997 | 35 |
1998 | 31.2 |
1999 | 35.6 |
2000 | 35.9 |
2001 | 35.83 |
2002 | 36.22 |
2003 | 39.49 |
2004 | 42.47 |
2005 | 41.51 |
2006 | 43.91 |
2007 | 43.38 |
2008 | 42.48 |
2009 | |
2010 | 41.19 |
2011 | 39.95 |
2012 | 36.36 |
2013 | 36.2 |
2014 | 37.31 |
2015 | 36.66 |
2016 | 35.3 |
2017 | |
2018 | 32.13 |