时间 | 值 (%) | 世界排名 |
---|---|---|
2011 | 4.1 | 64 |
2010 | 4.1 | 62 |
2009 | 5.5 | 56 |
2008 | 11.9 | 55 |
2007 | 6.2 | 60 |
2006 | 6.5 | 58 |
2005 | 5.9 | 58 |
2004 | 4.2 | 61 |
2003 | 4 | 56 |
2002 | 2 | 58 |
2001 | 3.7 | 59 |
2000 | 6.9 | 51 |
1999 | 2.7 | 59 |
1998 | 3.4 | 57 |
1997 | 5.7 | 51 |
1996 | 6 | 47 |
1995 | 34.5 | 21 |
1994 | 2.6 | 44 |