年度 | 实际值 |
---|---|
1995 | 2 |
1996 | 1.7 |
1997 | 4.86 |
1998 | 1.5 |
1999 | 1.7 |
2000 | 1.7 |
2001 | 4.7 |
2002 | 4.45 |
2003 | 3.72 |
2004 | 3.23 |
2005 | 3.02 |
2006 | 2.61 |
2007 | 2.29 |
2008 | 2.25 |
2009 | |
2010 | 2.38 |
2011 | 3.82 |
2012 | 3.75 |
2013 | 3.69 |
2014 | 3.34 |
2015 | 3.32 |
2016 | 3.18 |
2017 | 2.95 |
2018 | 2.88 |