Year	current US$
1960	72600000
1961	70500000
1962	46600000
1963	71100000
1964	94900000
1965	82100000
1966	82600000
1967	69800000
1968	95300000
1969	105364000
1970	102660000
1971	96775000
1972	118604000
1973	132449000.00000001
1974	146309000
1975	131913999.99999999
1976	102261000
1977	124273000
1978	154730000
1979	183319000
1980	219445000
1981	150470029.79999998
1982	88051000
1983	80461000
1984	147789000
1985	148269515.5
1986	121289077.1
1987	136773050.79999998
1988	102395628.6
1989	138256456.2
1990	137014000
1991	144722000
1992	149911751.5
1993	118020000
1994	115514000
1995	41466000
1996	46678000
1997	17200000
1998	6554000
1999	6260000
2000	15286429
2001	9610491
2002	11011321
2003	19359489
2004	14803224
2005	15710347
2006	30329356
2007	28392931
2008	31833830
2009	56643502
2010	48325111
2011	67115399
2012	126379075
2013	254440499
2014	299952902
2015	108178019
2016	494292621
2017	120529518
2018	207572275
2019	293601492
2020	2429446747