年度 | 实际值 |
---|---|
1995 | 17.6 |
1996 | 19.7 |
1997 | 20.65 |
1998 | 18.8 |
1999 | 18.3 |
2000 | 17.1 |
2001 | 15.41 |
2002 | 12.65 |
2003 | 11.12 |
2004 | 11.15 |
2005 | 10.2 |
2006 | 8.77 |
2007 | 7.16 |
2008 | 6.38 |
2009 | |
2010 | 5.7 |
2011 | 4.63 |
2012 | 4.89 |
2013 | 5.15 |
2014 | 5.21 |
2015 | 5.05 |
2016 | 5.23 |
2017 | 4.64 |
2018 | 4.68 |