年度 | 实际值 |
---|---|
1992 | 3.7 |
1993 | 4 |
1994 | |
1995 | 4.13 |
1996 | 4.62 |
1997 | 5.27 |
1998 | 7.06 |
1999 | 3.26 |
2000 | 3.45 |
2001 | 2.42 |
2002 | 3.4 |
2003 | 3.81 |
2004 | 3.28 |
2005 | 3.3 |
2006 | 6.81 |
2007 | 8.73 |
2008 | 5.76 |
2009 | 5.67 |
2010 | 7.25 |
2011 | 6.54 |
2012 | 3.88 |
2013 | 4.67 |
2014 | 5.1 |
2015 | 4.00653193859072 |
2016 | 5.74 |
2017 | 3.91 |
2018 | 3.37 |