年度 | 实际值 |
---|---|
1995 | 30 |
1996 | 31.2 |
1997 | 33.23 |
1998 | 31.9 |
1999 | 31.6 |
2000 | 34.3 |
2001 | 34.74 |
2002 | 34.45 |
2003 | 37.35 |
2004 | 41.5 |
2005 | 40.53 |
2006 | 42.94 |
2007 | 46.12 |
2008 | 51.35 |
2009 | |
2010 | 52.77 |
2011 | 52.66 |
2012 | 51.8 |
2013 | 50.6 |
2014 | 41.69 |
2015 | 31.79 |
2016 | 32.52 |
2017 | |
2018 | 31.85 |