年度 | 实际值 |
---|---|
1995 | 14.6 |
1996 | 13.1 |
1997 | 14.48 |
1998 | 10 |
1999 | 9.1 |
2000 | 7.9 |
2001 | 7.28 |
2002 | 5.95 |
2003 | 5.24 |
2004 | 4.61 |
2005 | 4.66 |
2006 | 4.11 |
2007 | 3.57 |
2008 | 3.63 |
2009 | |
2010 | 3.58 |
2011 | 3.9 |
2012 | 3.84 |
2013 | 3.73 |
2014 | 3.51 |
2015 | 3.55 |
2016 | 3.61 |
2017 | 3.19 |
2018 | 2.83 |