Year US Dollars adjusted for inflation) 1960 105000000 1961 246000000 1962 262000000 1963 241000000 1964 385000000 1965 296000000 1966 243000000 1967 149000000 1968 192000000 1969 325000000 1970 280000000 1971 395000000 1972 296000000 1973 328000000 1974 422000000 1975 512000000 1976 523000000 1977 505000000 1978 656000000 1979 1310000000 1980 1169000000 1981 1713000000 1982 1677000000 1983 1109000000 1984 1226000000 1985 868000000 1986 223000000 1987 621000000 1988 384000000 1989 324000000 1990 200000000 1991 354000000 1992 249000000 1993 341000000 1994 208000000 1995 301000000 1996 291000000 1997 451000000 1998 425000000 1999 521000000 2000 205000000 2001 269000000 2002 476000000 2003 362000000 2004 259000000 2005 830000000 2006 541000000 2007 722000000 2008 434000000 2009 508000000 2010 555000000 2011 965000000 2012 784000000 2013 922000000 2014 677000000 2015 687000000 2016 621000000 2017 717000000 2018 539000000 2019 384000000 2020 848000000 2021 1673000000 2022 1825000000