年度 | 实际值 |
---|---|
1995 | 21.7 |
1996 | 23.5 |
1997 | 21.8 |
1998 | 23 |
1999 | 23.1 |
2000 | 20.8 |
2001 | 20.42 |
2002 | 18.98 |
2003 | 16.9 |
2004 | 17.25 |
2005 | 15.86 |
2006 | 15.15 |
2007 | 13.85 |
2008 | 13.8 |
2009 | |
2010 | 12.09 |
2011 | 11.79 |
2012 | 11.96 |
2013 | 11.83 |
2014 | 11.45 |
2015 | 10.86 |
2016 | 10.47 |
2017 | |
2018 | 8.15 |