Year	current US$
1960	191100000
1961	211400000
1962	215200000
1963	221700000
1964	249000000
1965	246100000
1966	249900000
1967	261399999.99999997
1968	217800000
1969	262640000
1970	306190000
1971	346100000
1972	459950000
1973	682970000
1974	1133390000
1975	1418870000
1976	1528750000
1977	1824480000
1978	2120630000
1979	2822120000
1980	3523760000
1981	3940300000
1982	3370370000
1983	3169990000
1984	3215920000
1985	2776150000
1986	2853490000
1987	2837400000
1988	3696200000
1989	4620108948
1990	6127159642
1991	5525349582
1992	6457014689
1993	6213258817
1994	6571363372
1995	8031889875
1996	7748747100
1997	8934870818
1998	8402384871
1999	10194467122
2000	8600957974
2001	9570337906
2002	9527721612
2003	10951155765
2004	12985183778
2005	13318124403
2006	15020532497
2007	19059317927
2008	24521643111
2009	19149138122
2010	21875343559
2011	23487897337
2012	24001973904
2013	23804851217
2014	25039007907
2015	20414237839
2016	18981868500
2017	20654962423
2018	22625984462
2019	21564066375
2020	18361593166