| 序号 | 时间 (年) |
数据 (亿美元) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | |
| 8 | 2014 | |
| 9 | 2013 | |
| 10 | 2012 | |
| 11 | 2011 | 71.97 |
| 12 | 2010 | 66.13 |
| 13 | 2009 | 66.77 |
| 14 | 2008 | 59.68 |
| 15 | 2007 | 52.39 |
| 16 | 2006 | 44.51 |
| 17 | 2005 | 37.49 |
| 18 | 2004 | 34.09 |
| 19 | 2003 | 33.63 |
| 20 | 2002 | 35.91 |
| 21 | 2001 | 38.55 |
| 22 | 2000 | 46.29 |
| 23 | 1999 | 37.43 |
| 24 | 1998 | 33.11 |
| 25 | 1997 | 31.46 |
| 26 | 1996 | 28.65 |
| 27 | 1995 | 23.79 |
| 28 | 1994 | 19.48 |
| 29 | 1993 | 23.33 |
| 30 | 1992 | 28.81 |
| 31 | 1991 | 32.49 |
| 32 | 1990 | 29.39 |
| 33 | 1989 | 25.85 |
| 34 | 1988 | 25.75 |
| 35 | 1987 | 22.82 |
| 36 | 1986 | 20.97 |
| 37 | 1985 | 17.87 |
| 38 | 1984 | 15.91 |
| 39 | 1983 | 14.80 |
| 40 | 1982 | 14.50 |
| 41 | 1981 | 14.61 |
| 42 | 1980 | 14.01 |
