年度 | 实际值 |
---|---|
1995 | 2.8 |
1996 | 2.6 |
1997 | 3.14 |
1998 | 3.3 |
1999 | 3.5 |
2000 | 3.6 |
2001 | 3.96 |
2002 | 3.89 |
2003 | 3.56 |
2004 | 4.11 |
2005 | 2.92 |
2006 | 4.31 |
2007 | 4.03 |
2008 | 4.16 |
2009 | |
2010 | 4.15 |
2011 | 3.56 |
2012 | 3.52 |
2013 | 3.27 |
2014 | 3.24 |
2015 | 3.5 |
2016 | 3.64 |
2017 | 3.44 |
2018 | 3.41 |