年度 | 实际值 |
---|---|
1995 | 29.2 |
1996 | 29.4 |
1997 | 30 |
1998 | 30.8 |
1999 | 30.7 |
2000 | 31.3 |
2001 | 31.55 |
2002 | 31.26 |
2003 | 29.93 |
2004 | 29.37 |
2005 | 31 |
2006 | 30.47 |
2007 | 29.81 |
2008 | 28.83 |
2009 | |
2010 | 28.56 |
2011 | 26.7 |
2012 | 31.96 |
2013 | 33.61 |
2014 | 34.28 |
2015 | 36.42 |
2016 | 39.29 |
2017 | |
2018 | 47.61 |