Year	current US$
1960	72600000
1961	89900000
1962	83500000
1963	83000000
1964	99700000
1965	107400000
1966	100000000
1967	89700000
1968	89500000
1969	111529000
1970	118858000
1971	112821000
1972	119579000
1973	156897000
1974	223878000
1975	209537000
1976	167523000
1977	203143000
1981	328073446.6
1982	239768000
1983	147504000
1984	166393000
1985	154378000
1986	151760000
1987	136583922
1988	155828611.5
1989	182620729.6
1990	196502249.29999998
1991	217747354.1
1992	227988661.2
1993	249521572.3
1994	254902003.79999998
1995	246602454.6
1996	296070992.1
1997	234610818
1998	196563634.9
1999	199141795.4
2000	232830129
2001	514858548.00000006
2002	557673035
2003	644306283
2004	572104404
2005	602606661
2006	616300490
2007	691347423
2008	870995223
2009	842899558
2010	1033393841.0000001
2011	2022267817
2012	2142246643
2013	2090549444.0000002
2014	2064001300
2015	1764514212
2016	961727398
2017	1076489727
2018	989851467
2019	1728573724
2020	1788454849