年度 | 实际值 |
---|---|
1995 | 43.5 |
1996 | 40.2 |
1997 | 2.68 |
1998 | 37.7 |
1999 | |
2000 | |
2001 | |
2002 | 32.4 |
2003 | 31.81 |
2004 | 31.83 |
2005 | 27.79 |
2006 | 25.5 |
2007 | 25.24 |
2008 | 25.02 |
2009 | |
2010 | 25.1 |
2011 | 25.57 |
2012 | 26.79 |
2013 | 23.98 |
2014 | 22.82 |
2015 | 22.7 |
2016 | 22.18 |
2017 | 14.69 |
2018 | 17.39 |