Year	current US$
1960	2022900000
1961	2338500000
1962	2322900000
1963	2774300000
1964	2977300000
1965	2927500000
1966	3169500000
1967	3493400000
1968	3521000000
1969	4221819999.9999995
1970	4781360000
1971	5229160000
1972	6513330000
1973	9581940000
1974	11092560000
1975	11906330000
1976	13162030000
1977	13371980000
1978	14432200000
1979	18684330000
1980	22055600000
1981	21817990000
1982	22092270000
1983	20665750000
1984	23892380000
1985	22625810000
1986	22552590000
1987	26550380000
1988	32764430000
1989	37208062255
1990	38982471524
1991	41910053818
1992	42491776048
1993	42565011599
1994	47484361388
1995	53014000357
1996	60309927903
1997	63145770394
1998	56006131640
1999	56244205813
2000	63520815435
2001	63411559217
2002	65222183412
2003	70905108595
2004	86165317154
2005	105066000000
2006	121852000000
2007	141488000000
2008	185613000000
2009	153642000000
2010	211655000000
2011	270812000000
2012	257502000000
2013	253553000000
2014	240644000000
2015	188468000000
2016	191287000000
2017	229291000000
2018	254692000000
2019	272574000000
2020	251923000000