Year	current US$
1970	15969999.739900228
1971	19759999.7408688
1972	28640000.538900483
1973	47710000.85771088
1974	50540000.52064663
1975	104090000.45061111
1976	102520000.97930425
1977	144539998.38232994
1978	138400002.00271603
1979	214510005.57094812
1980	212100003.30209723
1981	185439997.5370615
1982	196259994.66702342
1983	179259999.63283542
1984	153060002.3325532
1985	159079998.1933087
1986	291579999.25315386
1987	245969996.39272684
1988	394559998.1080736
1989	386980001.6470253
1990	464200006.3173479
1991	583550003.7707388
1992	468239994.3917991
1993	378409996.7479706
1994	334170001.10261124
1995	328660002.41041183
1996	378090001.2888015
1997	301729998.07447195
1998	269220001.0120868
1999	301349997.4384903
2000	352409998.6106157
2001	315499999.055639
2002	345909999.5065482
2003	592889998.3689189
2004	603789995.1916188
2005	687920003.8593264
2006	735389994.1854173
2007	862330001.3151011
2008	877909996.0252643
2009	758930008.9776517
2010	786160009.1457365
2011	1134549995.360897
2012	801139985.6247005
2013	909000000.6034962
2014	820980004.4447184
2015	728590002.359823
2016	716720004.0295717
2017	865949997.5703652
2018	1014620006.7698956
2019	915449990.2091918
2020	905649999.9128283
2021	1132839988.6619294
2022	860660000.5552173