年度 | 实际值 |
---|---|
1995 | 45.2 |
1996 | 39 |
1997 | 35.74 |
1998 | |
1999 | 28 |
2000 | 25.8 |
2001 | 24.29 |
2002 | 22.96 |
2003 | 21.56 |
2004 | 22.12 |
2005 | 26.3 |
2006 | 23.69 |
2007 | 23.84 |
2008 | 22.8 |
2009 | |
2010 | 19.41 |
2011 | 18.22 |
2012 | 19.09 |
2013 | 18.68 |
2014 | 17.84 |
2015 | 17.34 |
2016 | 16.64 |
2017 | |
2018 | 13.72 |