年度 | 实际值 |
---|---|
1995 | 39.5 |
1996 | 37.9 |
1997 | 33.46 |
1998 | 31.7 |
1999 | |
2000 | |
2001 | |
2002 | 28.88 |
2003 | 38.01 |
2004 | 43.29 |
2005 | 44.16 |
2006 | 50.16 |
2007 | 50.37 |
2008 | 52.28 |
2009 | |
2010 | 54.14 |
2011 | 54.49 |
2012 | 54.84 |
2013 | 53.81 |
2014 | 53.38 |
2015 | 52.19 |
2016 | 53.37 |
2017 | |
2018 | 47.88 |