年度 | 实际值 |
---|---|
1995 | 14.8 |
1996 | 12.5 |
1997 | 30.36 |
1998 | 3.4 |
1999 | 3.1 |
2000 | 2.9 |
2001 | 2.94 |
2002 | 2.75 |
2003 | 2.75 |
2004 | 4.81 |
2005 | 4.55 |
2006 | 4.48 |
2007 | 4.99 |
2008 | 5.12 |
2009 | |
2010 | 3.93 |
2011 | 3.82 |
2012 | 3.48 |
2013 | 3.32 |
2014 | 3.35 |
2015 | 3.33 |
2016 | 3.27 |
2017 | 2.63 |
2018 | 2.39 |