年度 | 实际值 |
---|---|
1998 | 37.6 |
1999 | 34.9 |
2000 | 33.4 |
2001 | 31 |
2002 | 29.67 |
2003 | 28.7 |
2004 | 29.07 |
2005 | 27.73 |
2006 | 25.01 |
2007 | 25.45 |
2008 | 24.84 |
2009 | |
2010 | 20.46 |
2011 | 18.98 |
2012 | 18.61 |
2013 | 17.96 |
2014 | 16.94 |
2015 | 16.24 |
2016 | 15.78 |
2017 | |
2018 | 13.88 |