年度 | 实际值 |
---|---|
1982 | 2.26 |
1983 | 2.43 |
1984 | 2.54 |
1985 | 2.62 |
1986 | 2.36 |
1987 | 2.37 |
1988 | 2.37 |
1989 | 2.32 |
1990 | 2.04 |
1991 | 2.34 |
1992 | 2.33 |
1993 | 2.87 |
1994 | 2.78 |
1995 | 2.42 |
1996 | 2.56 |
1997 | 3 |
1998 | 3.02 |
1999 | 3.05 |
2000 | 3.21 |
2001 | 2.83 |
2002 | 3.08 |
2003 | 3.55 |
2004 | 4.79 |
2005 | 3.2 |
2006 | 6.03 |
2007 | 7.75 |
2008 | 7.24 |
2009 | 8.78 |
2010 | 7.63 |
2011 | 7.47 |
2012 | 7.94 |
2013 | 7.83 |
2014 | 8.1 |
2015 | 8.8 |