Year	current US$
1971	42016.4354
1972	48828.0915
1973	214453.9356
1974	142273.0237
1975	103416.4205
1976	354385.9422
1977	494532.8832
1978	565790.9513
1979	15397283.7927
1980	13783776.524799999
1981	14824448.6483
1982	34507257.8168
1983	27213752.393
1984	29281466.241000004
1985	31529161.8384
1986	36739463.3333
1987	40497272.121400006
1988	38799036.9259
1989	47424477.218
1990	44788769.15807839
1991	50465843.98664891
1992	47447510.77567459
1993	40615744.15002109
1994	49209210.905527696
1995	53153671.204323165
1996	88010206.41155863
1997	72652833.95963621
1998	57136453.27879167
1999	63862787.23967406
2000	30545718.95203883
2001	34395519.543875076
2002	30877708.830199197
2003	30451511.86138989
2004	41951685.538768776
2005	55413314.42371027
2006	75229686.99646494
2007	59794950.85112042
2008	69237147.26228893
2009	99169606.08738983
2010	129968059.04856698
2011	144790370.83108872
2012	134529308.33667377
2013	150230363.2976765
2014	150741927.82452404
2015	154183274.33547997
2016	195266920.84890217
2017	181573601.05760708
2018	182801896.97924167
2019	196822278.1550259
2020	170073052.08658162
2021	164170400.65503135
2022	164416018.47928542