年度 | 实际值 |
---|---|
1995 | 17.3 |
1996 | 19.7 |
1997 | 39.82 |
1998 | 11.4 |
1999 | 11 |
2000 | 11.9 |
2001 | 11.19 |
2002 | 18.41 |
2003 | 9.43 |
2004 | 8.99 |
2005 | 8.64 |
2006 | 8.16 |
2007 | 8.83 |
2008 | 8.75 |
2009 | |
2010 | 8.34 |
2011 | 8.43 |
2012 | 8.53 |
2013 | 8.13 |
2014 | 7.65 |
2015 | 7.68 |
2016 | 7.44 |
2017 | 6.3 |
2018 | 6.15 |