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