| 时间 | 值 （亿元） | 世界排名 |
|---|---|---|
| 2016 | 15 | 132 |
| 2015 | 14.1 | 146 |
| 2014 | 13.6 | 148 |
| 2013 | 13 | 150 |
| 2012 | 12.6 | 151 |
| 2011 | 11.3 | 152 |
| 2010 | 11 | 154 |
| 2009 | 10.8 | 155 |
| 2008 | 9.8 | 160 |
| 2007 | 9.3 | 160 |
| 2006 | 8.4 | 160 |
| 2005 | 7.6 | 159 |
| 2004 | 7.2 | 156 |
| 2003 | 6.7 | 154 |
| 2002 | 6.2 | 154 |
| 2001 | 5.7 | 153 |
| 2000 | 5.4 | 153 |
| 1999 | 5.6 | 148 |
| 1998 | 5.1 | 148 |
| 1997 | 5 | 146 |
| 1996 | 4.7 | 144 |
| 1995 | 4.4 | 144 |
| 1994 | 3.7 | 138 |
| 1993 | 3.5 | 135 |
| 1992 | 3.5 | 123 |
| 1991 | 3.1 | 122 |
| 1990 | 2.7 | 118 |
| 1989 | 2.3 | 115 |
| 1988 | 2.1 | 113 |
| 1987 | 1.9 | 113 |
| 1986 | 1.5 | 111 |