Year	current US$
1970	3614474801.8120046
1971	4001847115.6578574
1972	4336854029.251506
1973	6016438462.735334
1974	9201403812.824957
1975	10659903022.466461
1976	9308925988.613632
1977	9375893463.1843
1978	8845327075.812275
1979	12350737292.016485
1980	16762830729.996813
1981	14893910168.090384
1982	15138768965.091896
1983	14473740392.826645
1984	14401464186.782747
1985	15056600153.491941
1986	19160215810.462116
1987	24551602867.57744
1988	31741293532.338306
1989	38083691284.46723
1990	42627896128.12937
1991	30783708278.19438
1992	23713830634.45713
1993	16579577391.485374
1994	20413204325.554924
1995	27303921568.62745
1996	26743463629.30365
1997	27609666704.844807
1998	30848909657.32087
1999	30306419071.81474
2000	30073748208.627514
2001	30022397393.30712
2002	30962811641.176525
2003	38152908867.05875
2004	45163605311.19703
2005	50410537836.57585
2006	52093539589.41169
2007	65508850274.51001
2008	72134672720.31248
2009	54432778796.09371
2010	55079550350.00011
2011	66266813725.68106
2012	60415902506.250015
2013	60607338601.5688
2014	60252824571.764496
2015	50924422653.90623
2016	56039183893.77446
2017	61373318955.29422
2018	69665687487.8431
2019	64693312447.058716
2020	66675697859.92236
2021	71433966507.7508
2022	75398282490.27266
2023	68007471592.158066