年度 | 实际值 |
---|---|
1995 | 5.5 |
1996 | 5.9 |
1997 | 1.62 |
1998 | 6.2 |
1999 | 5.7 |
2000 | 5.1 |
2001 | 4.46 |
2002 | 4.16 |
2003 | 4.83 |
2004 | 3.62 |
2005 | 3.62 |
2006 | 3.4 |
2007 | 3.29 |
2008 | 3.2 |
2009 | |
2010 | 2.91 |
2011 | 2.18 |
2012 | 2.12 |
2013 | 2 |
2014 | 2.41 |
2015 | 2.38 |
2016 | 4.76 |
2017 | 2.93 |
2018 | 2.92 |