Year	current US$
1970	33419999.968260515
1971	59719999.44560224
1972	86830000.10251993
1973	88320000.38959086
1974	132870001.05157502
1975	171650000.54053965
1976	153610000.0552833
1977	130959999.87237151
1978	170240000.8384139
1979	175780001.0107457
1980	175300001.20401385
1981	208409999.5158614
1982	259049998.52925533
1983	227040000.88199985
1984	320729998.8307058
1985	329699998.45139676
1986	273360000.7034838
1987	357089999.679476
1988	378679999.49492496
1989	426010001.75625086
1990	402710001.6754119
1991	414960004.15831774
1992	403860001.5044216
1993	292649997.2492457
1994	248459998.98016453
1995	256710001.07377774
1996	255260000.0947715
1997	203110000.25644895
1998	259580001.9260494
1999	216499999.78765842
2000	177339998.65874657
2001	161489999.3687868
2002	346920004.6341867
2003	433910002.00994337
2004	539889999.7323749
2005	659869996.4880941
2006	750530004.5758492
2007	775999994.4865704
2008	913540014.7326293
2009	976970008.4179637
2010	1105840003.717691
2011	1011149998.3519311
2012	1276960013.3802748
2013	1048589995.5425416
2014	939040006.8499146
2015	819759995.3152244
2016	712680003.1550229
2017	835299996.9981608
2018	874429997.5261095
2019	750599998.1090429
2020	814460004.4861434
2021	1061329992.3241142
2022	1142039993.494749