年度 | 实际值 |
---|---|
1995 | 7.3 |
1996 | 7 |
1997 | 6.24 |
1998 | 6.3 |
1999 | 6.1 |
2000 | 5.7 |
2001 | 5.47 |
2002 | 5.09 |
2003 | 4.47 |
2004 | 4.58 |
2005 | 4.36 |
2006 | 3.83 |
2007 | 3.19 |
2008 | 3.15 |
2009 | |
2010 | 3.08 |
2011 | 2.64 |
2012 | 2.57 |
2013 | 2.37 |
2014 | 2.17 |
2015 | 2.06 |
2016 | 1.93 |
2017 | |
2018 | 1.45 |