| 年份 | 單位：億美元 |
| 含“(E)”其對應值為系統預測，僅供參考。 | |
| 2025（E） | 購買后可見 ? |
| 2024（E） | 購買后可見 ? |
| 2023（E） | 購買后可見 ? |
| 2022 | 購買后可見 ? |
| 2021 | 購買后可見 ? |
| 2020 | 購買后可見 ? |
| 2019 | 購買后可見 ? |
| 2018 | 購買后可見 ? |
| 2017 | 購買后可見 ? |
| 2016 | 購買后可見 ? |
| 2015 | 購買后可見 ? |
| 2014 | 購買后可見 ? |
| 2013 | 購買后可見 ? |
| 2012 | 2311.00 |
| 2011 | 1551.00 |
| 2010 | 1815.10 |
| 2009 | 1956.90 |
| 2008 | 2981.20 |
| 2007 | 2643.40 |
| 2006 | 1775.20 |
| 2005 | 1020.00 |
| 2004 | 320.90 |
| 2003 | 254.68 |
| 2002 | 304.26 |
| 2001 | 225.50 |
| 2000 | 241.09 |
| 1999 | 292.30 |
| 1998 | 434.70 |
| 1997 | 404.20 |
| 1996 | 122.20 |
| 1995 | 167.00 |
| 1994 | 54.00 |
| 1993 | -122.15 |
| 1992 | 43.55 |
| 1991 | 81.19 |
| 1990 | 87.46 |
| 1989 | -66.02 |
| 1988 | -77.50 |
| 1987 | -37.70 |
| 1986 | -119.70 |
| 1985 | -149.02 |
| 1984 | -12.70 |
| 1983 | 8.40 |
| 1982 | 30.30 |
| 1981 | -0.10 |
| 1980 | -18.98 |
| 1979 | -20.10 |
| 1978 | -11.40 |
| 1977 | 3.80 |
| 1976 | 2.70 |
| 1975 | -2.30 |
| 1974 | -6.70 |
| 1973 | 6.60 |
| 1972 | 5.80 |
| 1971 | 4.40 |
| 1970 | -0.70 |
| 1969 | 3.70 |
| 1968 | 1.50 |
| 1967 | 1.20 |
| 1966 | 1.20 |
| 1965 | 2.10 |
| 1964 | 3.70 |
| 1963 | 3.80 |
| 1962 | 3.20 |
| 1961 | 0.40 |
| 1960 | -0.90 |
| 1959 | 1.40 |
| 1958 | 0.90 |
| 1957 | 1.00 |
| 1956 | 0.90 |
| 1955 | -3.20 |
| 1954 | -1.40 |
| 1953 | -3.30 |
| 1952 | -3.00 |
| 1951 | -4.40 |
| 1950 | -0.30 |
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