年度 | 实际值 |
---|---|
1995 | 13.9 |
1996 | 12.7 |
1997 | 11.59 |
1998 | 11.2 |
1999 | 10.5 |
2000 | 10 |
2001 | 9.78 |
2002 | 8.63 |
2003 | 7.57 |
2004 | 7.02 |
2005 | 6.43 |
2006 | 5.8 |
2007 | 5.33 |
2008 | 5.25 |
2009 | |
2010 | 5.35 |
2011 | 5.16 |
2012 | 5.06 |
2013 | 4.87 |
2014 | 4.55 |
2015 | 4.45 |
2016 | 4.34 |
2017 | |
2018 | 3.62 |