| 时间 | 值 （亿元） | 世界排名 |
|---|---|---|
| 2016 | 75.4 | 120 |
| 2015 | 72 | 134 |
| 2014 | 63.2 | 137 |
| 2013 | 57.2 | 139 |
| 2012 | 48.1 | 140 |
| 2011 | 45.4 | 141 |
| 2010 | 40.7 | 143 |
| 2009 | 39.4 | 142 |
| 2008 | 36.8 | 147 |
| 2007 | 39.3 | 146 |
| 2006 | 36.3 | 143 |
| 2005 | 29.7 | 142 |
| 2004 | 25.8 | 141 |
| 2003 | 23.5 | 140 |
| 2002 | 20.3 | 142 |
| 2001 | 16.7 | 143 |
| 2000 | 15 | 143 |
| 1999 | 15.2 | 136 |
| 1998 | 13.4 | 136 |
| 1997 | 13.5 | 135 |
| 1996 | 14.8 | 127 |
| 1995 | 14.6 | 125 |
| 1994 | 14 | 118 |
| 1993 | 13.7 | 115 |
| 1992 | 12.9 | 105 |
| 1991 | 11.2 | 107 |
| 1990 | 9.8 | 101 |
| 1989 | 7.8 | 99 |
| 1988 | 7.2 | 98 |
| 1987 | 6 | 97 |
| 1986 | 5.7 | 93 |