年度 | 实际值 |
---|---|
1995 | 19.3 |
1996 | 19.4 |
1997 | 20.65 |
1998 | 16.3 |
1999 | |
2000 | 32.7 |
2001 | 29.79 |
2002 | 27.03 |
2003 | 24.77 |
2004 | 21.49 |
2005 | 21.21 |
2006 | 19.43 |
2007 | 19.07 |
2008 | 19.1 |
2009 | |
2010 | 16.86 |
2011 | 15.89 |
2012 | 15.24 |
2013 | 14.45 |
2014 | 13.76 |
2015 | 13.5 |
2016 | 13.07 |
2017 | |
2018 | 11.41 |