Year	current US$
1970	0
1971	0
1972	439999.98643994296
1973	660000.003874302
1974	739999.989047647
1975	899999.985471368
1976	799999.982118607
1977	750000.001862645
1978	790000.014007092
1979	489999.98904764705
1980	259999.997913837
1981	220000.000670552
1982	150000.000372529
1983	150000.002235174
1984	160000.003874302
1985	119999.99918043599
1986	139999.996870756
1987	189999.999478459
1988	299999.995157123
1989	229999.996721745
1990	1569999.96490777
1991	369999.995455146
1992	379999.998956919
1993	370000.00476837205
1994	370000.008493662
1995	1009999.9923259
1996	910000.015050173
1997	949999.9824911361
1998	929999.995976686
1999	1060000.0154227
2000	759999.988600612
2001	839999.992400408
2002	970000.000670552
2003	1319999.9798089298
2004	1410000.00201166
2005	999999.977648258
2006	620000.004768372
2007	2020000.0517070298
2008	1580000.0037998
2009	1560000.0079721198
2010	2620000.03270805
2011	2720000.03233552
2012	3000000.0372528997
2013	2809999.90180135
2014	2869999.9935924998
2015	2940000.0497698803
2016	2250000.02980232
2017	2659999.99642372
2018	3209999.89658594
2019	2879999.9319016896
2020	3580000.0205635997
2021	3240000.10639429
2022	2059999.9520927628