Year	current US$
1960	172400000
1961	158600000
1962	154400000
1963	168500000
1964	171100000
1965	163800000
1966	155000000
1967	168577000
1968	179300000
1969	207583000
1970	190701000
1971	218009000
1972	277671000
1973	361547000
1974	496810000
1975	581457000
1976	583438000
1977	763218000
1978	751366000
1979	930743000
1980	1051703000
1981	1075829000
1982	991830000
1983	1111972127
1984	1074157192
1985	931056810.5999999
1986	1100730064
1987	1175621938
1988	1079651615
1989	1322487955
1990	1387254056
1991	1155107614
1992	1258259094
1993	1052586190
1994	884081151.4
1995	1255577171
1996	1324181290
1997	1210395171
1998	1536838615
1999	1607506189
2000	1395180669
2001	1638349439
2002	1858424875
2003	2250637890
2004	2723433722
2005	3088116245
2006	3335652405
2007	4331581068
2008	5587132368
2009	4274061182.0000005
2010	4371752909
2011	5324901759
2012	5800764014
2013	6065730601
2014	6048666571
2015	5233413730
2016	5480070951
2017	6015667911
2018	7087666884
2019	8147950117
2020	7815772280