Year	current US$
1968	790000.021457672
1969	1120000.00476837
1970	1379999.99523163
1971	1519999.98092651
1972	1460000.03814697
1973	1679999.94754791
1974	1769999.98092651
1975	1070000.05245209
1976	1100000.02384186
1977	790000.021457672
1978	1259999.9904632599
1979	2240000.00953674
1980	2200000.04768372
1981	2079999.9237060498
1982	1929999.94754791
1983	1870000.00476837
1984	1870000.00476837
1985	1370000.00476837
1986	1090000.0333786
1987	1370000.00476837
1988	2079999.9237060498
1989	2960000.03814697
1990	2819999.9332428
1991	4329999.92370605
1992	4369999.88555908
1993	1830000.04291534
1994	1190000.0572204601
1995	-39999.9991059303
1996	1379999.99523163
1997	1779999.97138977
1998	2630000.1144409203
1999	660000.026226044
2000	959999.978542328
2001	129999.995231628
2002	289999.99165535
2003	319999.99284744303
2004	620000.004768372
2005	730000.019073486
2006	709999.978542328
2007	800000.011920929
2008	1059999.9427795399
2009	1419999.95708466
2010	1279999.97138977
2011	660000.026226044
2012	520061.075687408
2013	684418.9763069149
2014	359859.675168991
2015	619828.283786774
2016	377878.427505493
2017	436318.397521973
2018	373343.25909614604
2019	686850.011348724
2020	371300.965547562
2021	599205.553531647
2022	476736.158132553