年度 | 实际值 |
---|---|
1995 | 15.3 |
1996 | 15.9 |
1997 | 13.96 |
1998 | 14 |
1999 | |
2000 | |
2001 | |
2002 | 30.87 |
2003 | 30.87 |
2004 | 31.21 |
2005 | 28.29 |
2006 | 26.04 |
2007 | 23.13 |
2008 | 21.85 |
2009 | |
2010 | 20.88 |
2011 | 23.4 |
2012 | 25.64 |
2013 | 25.31 |
2014 | 22.83 |
2015 | 22.78 |
2016 | 22.95 |
2017 | |
2018 | 20.41 |