时间 | 值 (%) | 世界排名 |
---|---|---|
2016 | 0.1 | 54 |
2015 | 0.2 | 54 |
2014 | 0.2 | 59 |
2013 | 0.2 | 58 |
2012 | 0.2 | 55 |
2011 | 0.2 | 77 |
2010 | 0.2 | 76 |
2009 | 0.3 | 71 |
2008 | 2.7 | 69 |
2007 | 0.1 | 73 |
2006 | 0.3 | 71 |
2005 | 0.4 | 67 |
2004 | 0.8 | 68 |
2003 | 0.8 | 67 |
2002 | 1.3 | 62 |
2001 | 1.9 | 64 |
2000 | 3.6 | 58 |
1999 | 2.6 | 60 |
1998 | 4.1 | 55 |
1997 | 2.9 | 58 |
1996 | 1.6 | 57 |
1995 | 0.7 | 53 |
1994 | 0.9 | 48 |
1993 | 1.1 | 45 |
1992 | 1 | 28 |
1991 | 1.3 | 28 |
1990 | 1.9 | 27 |
1989 | 2 | 27 |
1988 | 3 | 26 |
1987 | 1.8 | 26 |
1986 | 2.6 | 26 |