年度 | 实际值 |
---|---|
1995 | 2.7 |
1996 | 2.9 |
1997 | 6.23 |
1998 | 2.5 |
1999 | 2.3 |
2000 | 2.1 |
2001 | 1.76 |
2002 | 1.77 |
2003 | 1.79 |
2004 | 1.75 |
2005 | 1.94 |
2006 | 1.76 |
2007 | 1.52 |
2008 | 2.24 |
2009 | |
2010 | 2.04 |
2011 | 2.26 |
2012 | 2.32 |
2013 | 2.51 |
2014 | 2.61 |
2015 | 2.52 |
2016 | 6.68 |
2017 | 5.85 |
2018 | 5.23 |