年度 | 实际值 |
---|---|
1995 | 2.7 |
1996 | 3.3 |
1997 | 8.99 |
1998 | 2.8 |
1999 | 2.7 |
2000 | 2.7 |
2001 | 2.73 |
2002 | 2.67 |
2003 | 8.62 |
2004 | 9.64 |
2005 | 6.57 |
2006 | 5.79 |
2007 | 5.33 |
2008 | 5.21 |
2009 | |
2010 | 5.28 |
2011 | 5.58 |
2012 | 5.45 |
2013 | 5.37 |
2014 | 5.18 |
2015 | 5.01 |
2016 | 4.99 |
2017 | 4.44 |
2018 | 4.09 |