年度 | 实际值 |
---|---|
1995 | 5.9 |
1996 | 5.6 |
1997 | 5.21 |
1998 | 4.8 |
1999 | 4.5 |
2000 | 4 |
2001 | 3.62 |
2002 | 3.43 |
2003 | 3.14 |
2004 | 2.81 |
2005 | 2.53 |
2006 | 2.39 |
2007 | 2.11 |
2008 | 2.04 |
2009 | |
2010 | 1.75 |
2011 | 1.65 |
2012 | 1.58 |
2013 | 1.48 |
2014 | 1.31 |
2015 | 1.25 |
2016 | 1.22 |
2017 | |
2018 | 0.98 |