年度 | 实际值 |
---|---|
1995 | 17.1 |
1996 | 16.2 |
1997 | 15.5 |
1998 | 16.3 |
1999 | 19.2 |
2000 | 17.2 |
2001 | 16.18 |
2002 | 14.78 |
2003 | 11.61 |
2004 | 11.53 |
2005 | 10.01 |
2006 | 8.88 |
2007 | 8.06 |
2008 | 8.11 |
2009 | |
2010 | 8.13 |
2011 | 7.91 |
2012 | 7.89 |
2013 | 7.79 |
2014 | 7.42 |
2015 | 7.12 |
2016 | 6.39 |
2017 | |
2018 | 5.69 |