| 序号 |
时间(年) |
数据(单位：亿美元) |
| 1 |
2021 |
|
| 2 |
2020 |
|
| 3 |
2019 |
|
| 4 |
2018 |
|
| 5 |
2017 |
|
| 6 |
2016 |
|
| 7 |
2015 |
13.03 |
| 8 |
2014 |
13.07 |
| 9 |
2013 |
10.66 |
| 10 |
2012 |
9.21 |
| 11 |
2011 |
8.88 |
| 12 |
2010 |
9.78 |
| 13 |
2009 |
9.36 |
| 14 |
2008 |
8.41 |
| 15 |
2007 |
7.06 |
| 16 |
2006 |
6.25 |
| 17 |
2005 |
5.86 |
| 18 |
2004 |
7.01 |
| 19 |
2003 |
5.72 |
| 20 |
2002 |
6.25 |
| 21 |
2001 |
7.58 |
| 22 |
2000 |
8.21 |
| 23 |
1999 |
8.19 |
| 24 |
1998 |
8.20 |
| 25 |
1997 |
8.27 |
| 26 |
1996 |
8.17 |
| 27 |
1995 |
7.84 |
| 28 |
1994 |
7.55 |
| 29 |
1993 |
7.54 |
| 30 |
1992 |
5.39 |
| 31 |
1991 |
3.93 |
| 32 |
1990 |
2.92 |
| 33 |
1989 |
2.76 |
| 34 |
1988 |
2.65 |
| 35 |
1987 |
2.68 |
| 36 |
1986 |
2.38 |
| 37 |
1985 |
2.26 |
| 38 |
1984 |
2.10 |
| 39 |
1983 |
2.13 |
| 40 |
1982 |
2.29 |
| 41 |
1981 |
2.54 |
| 42 |
1980 |
2.43 |
| 43 |
1979 |
1.92 |
| 44 |
1978 |
1.58 |
| 45 |
1977 |
1.38 |
| 46 |
1976 |
1.31 |
| 47 |
1975 |
1.23 |
| 48 |
1974 |
0.95 |
| 49 |
1973 |
0.74 |
| 50 |
1972 |
0.58 |
| 51 |
1971 |
0.54 |
| 52 |
1970 |
0.51 |
| 53 |
1969 |
0.48 |
| 54 |
1968 |
0.48 |
