Year US Dollars adjusted for inflation) 1960 2246000000 1961 1270000000 1962 1140000000 1963 1283000000 1964 1395000000 1965 1470000000 1966 1369000000 1967 1988000000 1968 1647000000 1969 1790000000 1970 927000000 1971 2252000000 1972 2512000000 1973 2768000000 1974 2353000000 1975 2441000000 1976 2513000000 1977 2208000000 1978 2220000000 1979 1539000000 1980 1589000000 1981 2365000000 1982 2514000000 1983 2596000000 1984 2567000000 1985 2142000000 1986 1973000000 1987 3594000000 1988 2519000000 1989 3515000000 1990 1851000000 1991 1515000000 1992 1098000000 1993 1389000000 1994 1522000000 1995 1460000000 1996 1618000000 1997 2359000000 1998 1387000000 1999 1310000000 2000 1601000000 2001 1359000000 2002 1076000000 2003 769000000 2004 1217000000 2005 1001000000 2006 954000000 2007 920000000 2008 927000000 2009 1073000000 2010 1151000000 2011 1007000000 2012 816000000 2013 1493000000 2014 1658000000 2015 1177000000 2016 1339000000 2017 1117000000 2018 683000000 2019 910000000 2020 625000000 2021 656000000 2022 1504000000