年度 | 实际值 |
---|---|
1995 | 13.7 |
1996 | 13.8 |
1997 | 10.3 |
1998 | 9.2 |
1999 | |
2000 | 5.8 |
2001 | 6.01 |
2002 | 5.72 |
2003 | 5.43 |
2004 | 4.94 |
2005 | 3 |
2006 | 2.9 |
2007 | 2.79 |
2008 | 2.59 |
2009 | |
2010 | 3.39 |
2011 | 3.66 |
2012 | 3.52 |
2013 | 3.85 |
2014 | 4 |
2015 | 3.67 |
2016 | 3.35 |
2017 | 2.88 |
2018 | 2.47 |