年度 | 实际值 |
---|---|
1995 | 43 |
1996 | 43.7 |
1997 | 42.44 |
1998 | 40 |
1999 | 37.6 |
2000 | 35.8 |
2001 | 38.3 |
2002 | 36.51 |
2003 | 30.48 |
2004 | 30.69 |
2005 | 30.84 |
2006 | 28.9 |
2007 | 28.12 |
2008 | 26.82 |
2009 | |
2010 | 23.89 |
2011 | 25.08 |
2012 | 24.58 |
2013 | 22.48 |
2014 | 21.54 |
2015 | 21.58 |
2016 | 21.36 |
2017 | |
2018 | 16.59 |