年度 | 实际值 |
---|---|
1995 | 32.2 |
1996 | 33 |
1997 | 31.71 |
1998 | 32.7 |
1999 | 32 |
2000 | 29.6 |
2001 | 29.43 |
2002 | 29.23 |
2003 | 27 |
2004 | 28.33 |
2005 | 26.18 |
2006 | 24.58 |
2007 | 21.95 |
2008 | 21.05 |
2009 | |
2010 | 20.54 |
2011 | 18.88 |
2012 | 18.1 |
2013 | 18.02 |
2014 | 17.52 |
2015 | 17.5 |
2016 | 16.55 |
2017 | |
2018 | 14.69 |