Year	current US$
1970	15793632.804450855
1971	16940946.957713805
1972	19733573.35733573
1973	22490862.530555233
1974	24408842.855551843
1975	27097511.993752092
1976	30450368.57517924
1977	34568567.65273966
1978	33362259.10660577
1979	36410658.68263473
1980	43554685.55804127
1981	44023534.63587922
1982	46058229.16666667
1983	49037128.9586022
1984	47506192.382903434
1985	46754575.40263543
1986	58822918.94253878
1987	70216078.52882704
1988	72224471.2598936
1989	72618625.27716187
1990	80280697.01472376
1991	82085524.5683931
1992	83517431.68663347
1993	74311959.57327345
1994	76796660.22946723
1995	78185797.66536964
1996	80990948.07050976
1997	82971860.74963853
1998	93269974.58282682
1999	90830822.21265605
2000	76183356.68850951
2001	89807195.81038691
2002	95363487.25461975
2003	106877972.9880305
2004	115584647.5129919
2005	118072478.87918405
2006	126718748.33987705
2007	145051857.46885437
2008	96366950.95457315
2009	125113092.18313532
2010	114358533.67790388
2011	95607686.18766741
2012	99878146.19985752
2013	112880817.91268367
2014	116742515.29304768
2015	102361275.88236152
2016	108096199.98245612
2017	89942612.7740083
2018	102493639.78197227
2019	74416983.50131717
2020	116547433.54103342
2021	163745014.60282156
2022	149635439.45742
2023	152900547.85034382