Year	current US$
1960	2249400000
1961	2213300000
1962	2311200000
1963	2438800000
1964	2661100000
1965	2772900000
1966	2731700000
1967	2672600000
1968	2507480000
1969	2116139999.9999998
1970	2093310000
1971	2408930000
1972	2235360000
1973	3233580000
1974	5063860000
1975	6197190000
1976	5098090000
1977	6663010000
1978	7819490000
1979	9898310000
1980	14821820000
1981	14549560000
1982	15634832072
1983	13892733307
1984	15115251169
1985	16328998485
1986	15051439900
1987	16838039379.000002
1988	19034715452
1989	19297491942
1990	23991423128
1991	19509428000
1992	23196569257
1993	21268794080
1994	25484480716
1995	34486530000
1996	36054758486
1997	40896425000
1998	42162075000
1999	47900500000
2000	50259699995
2001	50129318523
2002	58811451699
2003	73931350643
2004	99815185137
2005	139667000000
2006	176526000000
2007	234640000000
2008	321399000000
2009	257649000000
2010	350780000000
2011	465073000000
2012	490405000000
2013	467939000000
2014	460501000000
2015	392230000000
2016	356320000000
2017	442983000000
2018	508988000000
2019	479894000000
2020	368030000000