年度 | 实际值 |
---|---|
1995 | 35.2 |
1996 | 37 |
1997 | 38.99 |
1998 | 36.1 |
1999 | 31.4 |
2000 | 29.8 |
2001 | 28.7 |
2002 | 26.81 |
2003 | 26.85 |
2004 | 29.1 |
2005 | 31.09 |
2006 | 30.76 |
2007 | 30.51 |
2008 | 31.64 |
2009 | |
2010 | 28.58 |
2011 | 30.26 |
2012 | 30.19 |
2013 | 33.44 |
2014 | 32.52 |
2015 | 33.07 |
2016 | 31.24 |
2017 | |
2018 | 35.29 |