年度 | 实际值 |
---|---|
1995 | 55 |
1996 | 52.6 |
1997 | 51.18 |
1998 | 52 |
1999 | 51.1 |
2000 | 50.9 |
2001 | 50.43 |
2002 | 50.92 |
2003 | 50.39 |
2004 | 52.58 |
2005 | 47.45 |
2006 | 48.39 |
2007 | 46.41 |
2008 | 46.97 |
2009 | |
2010 | 40.73 |
2011 | 42.43 |
2012 | 42.19 |
2013 | 40.69 |
2014 | 39.11 |
2015 | 38.34 |
2016 | 38.6 |
2017 | |
2018 | 37.22 |