Year	current US$
1960	1136000000
1961	1081000000
1962	1116000000
1963	1135000000
1964	906000000
1965	981000000
1966	1102000000
1967	1140000000
1968	1271000000
1969	1549000000
1970	1554000000
1971	1761000000
1972	2189000000
1973	3653000000
1974	5810000000
1975	5376000000
1976	6585000000
1977	8241000000
1978	10134000000
1979	14233000000
1980	19376000000
1981	20967000000
1982	20787000000
1983	21833000000
1984	24070000000
1985	22812000000
1986	22495000000
1987	28687000000
1988	39306000000
1989	44665000000
1990	52730000000
1991	58966000000
1992	63472000000
1993	74012000000
1994	96825000000
1995	118268000000
1996	125014000000
1997	124985000000
1998	109895000000
1999	114680000000
2000	137804000000
2001	121751000000
2002	125177000000
2003	159902000000
2004	198637000000
2005	229649000000
2006	271807000000
2007	299308000000
2008	338176000000
2009	269832000000
2010	351867000000
2011	409503000000
2012	408393000000
2013	410250000000
2014	415378000000
2015	351587000000
2016	330481000000
2017	373446000000
2018	412955000000
2019	390763000000
2020	362534000000
2021	457357000000
2022	515802000000
2023	476252000000