年度 | 实际值 |
---|---|
1995 | 21.2 |
1996 | 23.6 |
1997 | 23.89 |
1998 | 22.4 |
1999 | 21.9 |
2000 | 20.5 |
2001 | 18.64 |
2002 | 15.62 |
2003 | 13.47 |
2004 | 13.51 |
2005 | 12.45 |
2006 | 10.82 |
2007 | 8.71 |
2008 | 7.71 |
2009 | |
2010 | 6 |
2011 | 5.65 |
2012 | 5.81 |
2013 | 5.86 |
2014 | 6.02 |
2015 | 5.91 |
2016 | 6.15 |
2017 | |
2018 | 5.4 |