| 序号 | 时间 (年) |
数据 (亿美元) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 0.96 |
| 8 | 2017 | 1.21 |
| 9 | 2016 | 1.16 |
| 10 | 2015 | 1.70 |
| 11 | 2014 | 1.10 |
| 12 | 2013 | 3.51 |
| 13 | 2012 | 2.57 |
| 14 | 2011 | 1.51 |
| 15 | 2010 | 1.63 |
| 16 | 2009 | 0.95 |
| 17 | 2008 | 0.63 |
| 18 | 2007 | 2.02 |
| 19 | 2006 | 2.59 |
| 20 | 2005 | 3.03 |
| 21 | 2004 | 2.56 |
| 22 | 2003 | 1.47 |
| 23 | 2002 | 1.52 |
| 24 | 2001 | 1.29 |
| 25 | 2000 | 1.33 |
| 26 | 1999 | 1.64 |
| 27 | 1998 | 1.21 |
| 28 | 1997 | 1.30 |
| 29 | 1996 | 1.61 |
| 30 | 1995 | 1.20 |
| 31 | 1994 | 1.36 |
| 32 | 1993 | 1.08 |
| 33 | 1992 | 0.97 |
| 34 | 1991 | 0.87 |
| 35 | 1990 | 0.92 |
| 36 | 1989 | 0.96 |
| 37 | 1988 | 1.07 |
| 38 | 1987 | 0.94 |
| 39 | 1986 | 0.72 |
| 40 | 1985 | 0.60 |
| 41 | 1984 | 0.50 |
| 42 | 1983 | 0.29 |
| 43 | 1982 | 0.20 |
| 44 | 1981 | 0.39 |
| 45 | 1980 | 0.52 |
| 46 | 1979 | 0.33 |
| 47 | 1978 | 0.39 |
| 48 | 1977 | 0.28 |
| 49 | 1976 | 0.14 |
