年度 | 实际值 |
---|---|
1999 | 15.945 |
2000 | 17.3496 |
2001 | 17.5 |
2002 | 19.3556 |
2003 | 19.1755 |
2004 | 19.2619 |
2005 | 20.9696 |
2006 | 22.1256 |
2007 | 21.7787 |
2008 | 21.2053 |
2009 | 23.7385 |
2010 | 24.5559 |
2011 | 25.0964 |
2012 | 27.9886 |
2013 | 29.1222 |
2014 | 28.6871 |
2015 | 28.9836 |