年度 | 实际值 |
---|---|
1995 | 33.5 |
1996 | 45.7 |
1997 | 45.18 |
1998 | 44.9 |
1999 | 43.8 |
2000 | 41.6 |
2001 | 38.8 |
2002 | 37.01 |
2003 | 39.07 |
2004 | 37.63 |
2005 | 29.08 |
2006 | 26.81 |
2007 | 25.81 |
2008 | 24.2 |
2009 | |
2010 | 19.84 |
2011 | 22 |
2012 | 21.89 |
2013 | 21.66 |
2014 | 19.97 |
2015 | 20.11 |
2016 | 19.84 |
2017 | |
2018 | 16.94 |