年度 | 实际值 |
---|---|
1995 | 25.7 |
1996 | 26.5 |
1997 | 28.3 |
1998 | 31.7 |
1999 | 33.2 |
2000 | 36.3 |
2001 | 35.96 |
2002 | 37.92 |
2003 | 37 |
2004 | 34.68 |
2005 | 39.94 |
2006 | 35.73 |
2007 | 33.19 |
2008 | 31.66 |
2009 | |
2010 | 35.83 |
2011 | 34.59 |
2012 | 35.38 |
2013 | 38.24 |
2014 | 41.53 |
2015 | 42.68 |
2016 | 45.23 |
2017 | |
2018 | 50.96 |