年度 | 实际值 |
---|---|
1995 | 34.4 |
1996 | 34.9 |
1997 | 34.54 |
1998 | 34.8 |
1999 | 34.1 |
2000 | 32 |
2001 | 31.82 |
2002 | 30.39 |
2003 | 25.69 |
2004 | 28.1 |
2005 | 29.73 |
2006 | 27.6 |
2007 | 24.43 |
2008 | 22.29 |
2009 | |
2010 | 23.65 |
2011 | 22.15 |
2012 | 21.35 |
2013 | 20.56 |
2014 | 19.11 |
2015 | 17.68 |
2016 | 16.39 |
2017 | |
2018 | 13.64 |