年度 | 实际值 |
---|---|
1997 | 34.59 |
1998 | 55.9 |
1999 | |
2000 | |
2001 | |
2002 | 35.78 |
2003 | 39.13 |
2004 | 37.34 |
2005 | 28.4 |
2006 | 26.62 |
2007 | 25.96 |
2008 | 20.09 |
2009 | |
2010 | 19.64 |
2011 | 19.04 |
2012 | 18.75 |
2013 | 19.7 |
2014 | 19.11 |
2015 | 17.74 |
2016 | 16.93 |
2017 | 16.43 |
2018 | 15.03 |