年度 | 实际值 |
---|---|
1995 | 3.4 |
1996 | 3.7 |
1997 | 2 |
1998 | 3.9 |
1999 | 4 |
2000 | 3.9 |
2001 | 3.47 |
2002 | 3.01 |
2003 | 2.21 |
2004 | 2.06 |
2005 | 1.87 |
2006 | 1.84 |
2007 | 1.35 |
2008 | 1.24 |
2009 | |
2010 | 1.16 |
2011 | 1.16 |
2012 | 3.51 |
2013 | 4.25 |
2014 | 2.12 |
2015 | 1.57 |
2016 | 1.41 |
2017 | 1.23 |
2018 | 1.19 |