年度 | 实际值 |
---|---|
1995 | 2.7 |
1996 | 3 |
1997 | 2.01 |
1998 | 2.3 |
1999 | 2.4 |
2000 | 2 |
2001 | 1.83 |
2002 | 4.31 |
2003 | 3.52 |
2004 | 2.78 |
2005 | 2.75 |
2006 | 2.38 |
2007 | 2.13 |
2008 | 1.91 |
2009 | |
2010 | 2.3 |
2011 | 1.94 |
2012 | 1.98 |
2013 | 1.95 |
2014 | 1.71 |
2015 | 2.21 |
2016 | 2.09 |
2017 | 1.84 |
2018 | 1.73 |