年度 | 实际值 |
---|---|
1995 | 30.2 |
1996 | 31.5 |
1997 | 33 |
1998 | 35.1 |
1999 | 39.2 |
2000 | 38.9 |
2001 | 40.39 |
2002 | 39.79 |
2003 | 37.93 |
2004 | 34.54 |
2005 | 37.8 |
2006 | 37.86 |
2007 | 37.97 |
2008 | 31.95 |
2009 | |
2010 | 26.48 |
2011 | 28.06 |
2012 | 31.55 |
2013 | 40.56 |
2014 | 44.73 |
2015 | 47.13 |
2016 | 48.79 |
2017 | |
2018 | 47.79 |