年度 | 实际值 |
---|---|
1995 | 33.8 |
1996 | 33.6 |
1997 | 27.91 |
1998 | 27.9 |
1999 | |
2000 | 25.8 |
2001 | 23.11 |
2002 | 20.3 |
2003 | 17.71 |
2004 | 15.56 |
2005 | 14.33 |
2006 | 12.63 |
2007 | 11.63 |
2008 | 10.93 |
2009 | |
2010 | 9.49 |
2011 | 9.1 |
2012 | 8.88 |
2013 | 8.61 |
2014 | 8.42 |
2015 | 8.28 |
2016 | 7.9 |
2017 | |
2018 | 6.75 |