年度 | 实际值 |
---|---|
1981 | 3.35 |
1982 | 3.61 |
1983 | 3.75 |
1984 | 3.97 |
1985 | 4.11 |
1986 | 4.11 |
1987 | 4.34 |
1988 | 4.39 |
1989 | 4.51 |
1990 | 4.53 |
1991 | 4.56 |
1992 | 4.81 |
1993 | 5.04 |
1994 | 5.17 |
1995 | 4.28 |
1996 | 5.05 |
1997 | 4.76 |
1998 | 4.82 |
1999 | 4.99 |
2000 | 5.13 |
2001 | 6.06 |
2002 | 5.88 |
2003 | 5.92 |
2004 | 6.61 |
2005 | 6.59 |
2006 | 7.35 |
2007 | 7.55 |
2008 | 7.42 |
2009 | 7.42 |
2010 | 8.11 |
2011 | 8.85 |
2012 | 8.76 |
2013 | 6.39 |
2014 | 8.68 |
2015 | 9.06 |