年度 | 实际值 |
---|---|
1995 | 32.7 |
1996 | 34.5 |
1997 | 36 |
1998 | 38.1 |
1999 | 39.4 |
2000 | 39.7 |
2001 | 38.85 |
2002 | 39.97 |
2003 | 40.63 |
2004 | 40.68 |
2005 | 40.18 |
2006 | 41.86 |
2007 | 42.18 |
2008 | 44.6 |
2009 | |
2010 | 45.94 |
2011 | 49.1 |
2012 | 49.47 |
2013 | 48.67 |
2014 | 47.65 |
2015 | 45.68 |
2016 | 42.56 |
2017 | |
2018 | 37.87 |