年度 | 实际值 |
---|---|
1995 | 2.9 |
1996 | 2.6 |
1997 | 2.88 |
1998 | 3.1 |
1999 | 2.9 |
2000 | 2.6 |
2001 | 2.31 |
2002 | 2.09 |
2003 | 1.69 |
2004 | 2.56 |
2005 | 2.41 |
2006 | 2.35 |
2007 | 1.8 |
2008 | 1.81 |
2009 | |
2010 | 1.92 |
2011 | 1.68 |
2012 | 1.66 |
2013 | 1.61 |
2014 | 1.53 |
2015 | 1.39 |
2016 | 1.17 |
2017 | 0.93 |
2018 | 0.83 |