Year US Dollars adjusted for inflation) 1960 67000000 1961 300000000 1962 188000000 1963 213000000 1964 253000000 1965 111000000 1966 92000000 1967 58000000 1968 193000000 1969 163000000 1970 188000000 1971 285000000 1972 318000000 1973 113000000 1974 113000000 1975 82000000 1976 259000000 1977 138000000 1978 179000000 1979 167000000 1980 136000000 1981 109000000 1982 240000000 1983 99000000 1984 78000000 1985 84000000 1986 237000000 1987 246000000 1988 125000000 1989 34000000 1990 79000000 1991 93000000 1992 139000000 1993 144000000 1994 164000000 1995 254000000 1996 146000000 1997 96000000 1998 37000000 1999 78000000 2000 67000000 2001 112000000 2002 159000000 2003 306000000 2004 309000000 2005 218000000 2006 216000000 2007 314000000 2008 219000000 2009 165000000 2010 219000000 2011 291000000 2012 248000000 2013 160000000 2014 173000000 2015 321000000 2016 94000000 2017 63000000 2018 115000000 2019 221000000 2020 110000000 2021 118000000 2022 171000000