年度 | 实际值 |
---|---|
1998 | 30.5 |
1999 | |
2000 | 30.3 |
2001 | 32.38 |
2002 | 32.49 |
2003 | 31.79 |
2004 | 29.59 |
2005 | 28.88 |
2006 | 28.4 |
2007 | 27.03 |
2008 | 25.66 |
2009 | |
2010 | 23.97 |
2011 | 22.86 |
2012 | 22.36 |
2013 | 22.85 |
2014 | 23.78 |
2015 | 24.92 |
2016 | 29.32 |
2017 | |
2018 | 36.77 |