时间 | 值 (亿美元) | 世界排名 |
---|---|---|
2016 | 56.1 | 30 |
2015 | 57.3 | 30 |
2014 | 51.6 | 37 |
2013 | 46.5 | 42 |
2012 | 46 | 37 |
2011 | 45.6 | 40 |
2010 | 44.9 | 37 |
2009 | 40.4 | 37 |
2008 | 37.3 | 42 |
2007 | 32.6 | 43 |
2006 | 29.5 | 41 |
2005 | 25.6 | 41 |
2004 | 23.9 | 42 |
2003 | 27.7 | 35 |
2002 | 30.3 | 29 |
2001 | 30.6 | 28 |
2000 | 26.8 | 32 |
1999 | 24.5 | 33 |
1998 | 23.7 | 33 |
1997 | 22.7 | 38 |
1996 | 21.2 | 38 |
1995 | 19.5 | 40 |
1994 | 17.2 | 40 |
1993 | 15.4 | 40 |
1992 | 14.2 | 39 |
1991 | 14 | 39 |
1990 | 15.7 | 39 |
1989 | 15.7 | 34 |
1988 | 17.7 | 29 |
1987 | 26.4 | 23 |
1986 | 31 | 18 |