年度 | 实际值 |
---|---|
1995 | 19.6 |
1996 | 20.4 |
1997 | 21.74 |
1998 | 24 |
1999 | |
2000 | |
2001 | 30.37 |
2002 | 31.69 |
2003 | 33.4 |
2004 | 34.3 |
2005 | 32.1 |
2006 | 34.89 |
2007 | 35.5 |
2008 | 36.81 |
2009 | |
2010 | 40.01 |
2011 | 42.34 |
2012 | 44.04 |
2013 | 43.59 |
2014 | 42.59 |
2015 | 36.65 |
2016 | 36.98 |
2017 | |
2018 | 28.07 |