年度 | 实际值 |
---|---|
1995 | 21.8 |
1996 | 22.4 |
1997 | 23.33 |
1998 | 24.6 |
1999 | 22.7 |
2000 | 24 |
2001 | 24.42 |
2002 | 24.8 |
2003 | 24.43 |
2004 | 23.68 |
2005 | 20.96 |
2006 | 20.77 |
2007 | 21.17 |
2008 | 19.66 |
2009 | |
2010 | 19.66 |
2011 | 20.68 |
2012 | 20.96 |
2013 | 20.68 |
2014 | 29.7 |
2015 | 31.59 |
2016 | 34.07 |
2017 | |
2018 | 39.47 |