年度 | 实际值 |
---|---|
1995 | 38 |
1996 | 31.3 |
1997 | 34.01 |
1998 | 35.1 |
1999 | 36.7 |
2000 | 38.2 |
2001 | 39.44 |
2002 | 38.83 |
2003 | 38.95 |
2004 | 37.31 |
2005 | |
2006 | 35.7 |
2007 | 33.66 |
2008 | 33.11 |
2009 | |
2010 | 35.33 |
2011 | 33.44 |
2012 | 33.62 |
2013 | 30.58 |
2014 | 30.18 |
2015 | 30.93 |
2016 | 30.65 |
2017 | |
2018 | 36.76 |