| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2018 | |
| 2 | 2017 | |
| 3 | 2016 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | 22415.73 |
| 8 | 2011 | 23566.44 |
| 9 | 2010 | 18072.79 |
| 10 | 2009 | 11834.60 |
| 11 | 2008 | 15297.24 |
| 12 | 2007 | 8963.16 |
| 13 | 2006 | 9316.76 |
| 14 | 2005 | 9559.44 |
| 15 | 2004 | 6425.84 |
| 16 | 2003 | 4483.54 |
| 17 | 2002 | 3852.70 |
| 18 | 2001 | 4438.63 |
| 19 | 2000 | 5302.76 |
| 20 | 1999 | 5942.46 |
| 21 | 1998 | 6848.22 |
| 22 | 1997 | 9270.19 |
| 23 | 1996 | 5093.37 |
| 24 | 1995 | 12933.75 |
| 25 | 1994 | 9557.81 |
| 26 | 1993 | 8850.40 |
| 27 | 1992 | 9442.61 |
| 28 | 1991 | 11861.44 |
| 29 | 1990 | 8943.95 |
| 30 | 1989 | 10856.09 |
| 31 | 1988 | 13627.98 |
| 32 | 1987 | 11025.07 |
| 33 | 1986 | 14087.63 |
| 34 | 1985 | 12680.34 |
