Year	current US$
1960	209999.995306134
1961	879999.993368983
1962	2019999.96602535
1963	1649999.96498227
1964	6199999.93778765
1965	9910000.0038743
1966	15920000.154525
1967	17599999.83944
1968	20399999.87185
1969	21860000.250861
1970	36340000.0538677
1971	68919999.9105185
1972	92280000.2396107
1973	92750000.3371388
1974	144500001.166016
1975	194550000.93392998
1976	167729999.940842
1977	137379999.78102702
1978	190460000.095889
1979	191680001.16571802
1980	198210001.520813
1981	232710000.351071
1982	274029998.49245
1983	247470000.822097
1984	353929999.170825
1985	351559997.646138
1986	301620000.39964896
1987	368619999.695569
1988	393939999.38108
1989	448090002.603829
1990	434200001.774356
1991	457350004.62084997
1992	472130003.18408
1993	346259995.520115
1994	294319999.665022
1995	308649998.925626
1996	293439999.952912
1997	257649999.722838
1998	315270003.14742297
1999	240689999.558032
2000	199689998.753369
2001	201420000.132173
2002	373990004.023537
2003	495550003.232434
2004	614199999.198318
2005	976360002.696514
2006	1042780000.2992201
2007	1165979988.54518
2008	1302520000.69991
2009	1308900007.8141701
2010	1514900001.27628
2011	1514929997.13123
2012	1829360007.2767599
2013	1483919989.7442
2014	1340340009.9016702
2015	1066799996.23075
2016	955070006.359369
2017	1125520009.51394
2018	1312850007.13915
2019	1066259994.14176
2020	1329400006.92755
2021	2107339994.4603403
2022	1142039993.494749