| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2018 | |
| 2 | 2017 | |
| 3 | 2016 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | |
| 8 | 2011 | |
| 9 | 2010 | |
| 10 | 2009 | |
| 11 | 2008 | 59424.50 |
| 12 | 2007 | 43625.25 |
| 13 | 2006 | 44693.09 |
| 14 | 2005 | 32299.28 |
| 15 | 2004 | 23205.51 |
| 16 | 2003 | 17531.95 |
| 17 | 2002 | 14748.79 |
| 18 | 2001 | 14648.23 |
| 19 | 2000 | 15048.72 |
| 20 | 1999 | 12217.24 |
| 21 | 1998 | 16483.35 |
| 22 | 1997 | 13078.98 |
| 23 | 1996 | 13838.30 |
| 24 | 1995 | 25889.51 |
| 25 | 1994 | 26651.76 |
| 26 | 1993 | 28767.61 |
| 27 | 1992 | 31911.16 |
| 28 | 1991 | 33723.78 |
| 29 | 1990 | 31823.64 |
| 30 | 1989 | 24402.10 |
| 31 | 1988 | 28093.59 |
| 32 | 1987 | 29125.03 |
| 33 | 1986 | 26818.52 |
| 34 | 1985 | 23901.58 |
