年度 | 实际值 |
---|---|
1995 | 24.5 |
1996 | 24.3 |
1997 | 23.16 |
1998 | 23.1 |
1999 | 22.9 |
2000 | 21.1 |
2001 | 20.06 |
2002 | 18.98 |
2003 | 16.4 |
2004 | 17.21 |
2005 | 16.44 |
2006 | 14.8 |
2007 | 13.01 |
2008 | 12.61 |
2009 | |
2010 | 11.39 |
2011 | 10.81 |
2012 | 10.36 |
2013 | 9.85 |
2014 | 8.85 |
2015 | 7.81 |
2016 | 6.83 |
2017 | |
2018 | 5.24 |