年度 | 实际值 |
---|---|
1995 | 2.9 |
1996 | 2.3 |
1997 | 15.83 |
1998 | 4.5 |
1999 | 4.4 |
2000 | 4 |
2001 | 3.67 |
2002 | 3.35 |
2003 | 2.99 |
2004 | 2.63 |
2005 | 2.38 |
2006 | 2.01 |
2007 | 1.74 |
2008 | 2.5 |
2009 | |
2010 | 2.57 |
2011 | 2.34 |
2012 | 2.27 |
2013 | 4.03 |
2014 | 3.79 |
2015 | 3.63 |
2016 | 3.55 |
2017 | 3.33 |
2018 | 3.27 |