Year	current US$
1970	42340000.24199487
1971	50819999.51228498
1972	59399999.765679225
1973	61219999.78087845
1974	59250000.1527369
1975	84660000.00387432
1976	73270000.1820922
1977	78369999.77380037
1978	91389999.79197983
1979	119280000.01795587
1980	154009998.6791611
1981	207310001.01566315
1982	181250000.49173826
1983	145390000.15705815
1984	131060000.55000184
1985	160770001.06871122
1986	186949999.32497734
1987	178899999.05228606
1988	204009999.6626378
1989	213880000.23365027
1990	195169999.6739626
1991	228360001.4150142
1992	184100002.5123359
1993	159660000.57756895
1994	144679998.11470515
1995	137940000.89168546
1996	192729996.8432634
1997	228429998.90446654
1998	197079999.28668144
1999	134490001.1122228
2000	117139999.91863966
2001	109510000.5883723
2002	112919999.53240165
2003	108800000.24102631
2004	143070000.02264977
2005	147650000.75101855
2006	162510000.37603077
2007	161030000.001192
2008	201170001.11937523
2009	223019999.23586854
2010	214570001.1104345
2011	179480001.29871073
2012	173863895.77682525
2013	163347223.8741815
2014	165851053.83582407
2015	147391378.9782674
2016	140347421.30339152
2017	133039322.69066356
2018	123743655.47485651
2019	161540965.1324153
2020	187017016.7386532
2021	176572690.71042538
2022	207857969.56717965