时间 | 值 (亿美元) | 世界排名 |
---|---|---|
2015 | 0.3 | 171 |
2014 | 0.4 | 167 |
2013 | 0.2 | 172 |
2012 | 0.2 | 180 |
2011 | 0.1 | 179 |
2010 | 0 | 183 |
2009 | 0 | 178 |
2008 | 0 | 183 |
2007 | 0 | 188 |
2006 | 0.3 | 168 |
2005 | 0 | 173 |
2004 | 0.1 | 168 |
2003 | 0.1 | 168 |
2002 | 0 | 173 |
2001 | 0 | 175 |
2000 | 0 | 160 |
1999 | 0.1 | 152 |
1998 | 0 | 179 |
1997 | 0.8 | 111 |
1996 | 0 | 174 |
1995 | 0 | 169 |
1992 | 0 | 139 |
1991 | 0 | 130 |
1990 | 0 | 125 |
1989 | 0 | 117 |