Year	current US$
1964	1215700000
1965	1270000000
1966	1308200000
1967	1919700000
1968	1869600000
1981	9936776014
1982	15686551949
1983	19184986504
1984	15182204358
1985	13725080278
1986	8043967133
1987	11040029048
1988	10709000000
1989	13081000000
1990	19305000000
1991	18661000000
1992	19868000000
1993	18080000000
1994	19434000000
1995	18360000000
1996	22391000000
1997	18380800000
1998	13118000000
1999	21030000000
2000	24915559279
2001	21588587268
2002	19567107643
2003	28827617079
2004	37395520211
2005	48817147223
2006	68191311856
2007	79178931644
2008	105447000000
2009	64566039832
2010	86226342422
2011	111887000000
2012	83220633037
2013	62607365179
2014	64270267553
2015	39738000055
2016	47597413316
2017	66305166568
2018	71930746080
2019	30474907992
2020	15151116947