Year	current US$
1971	720000.028610229
1972	219999.998807907
1974	9999.99977648258
1975	9999.99977648258
1976	19999.9995529652
1977	9999.99977648258
1979	29999.999329447703
1981	70000.0002980232
1982	219999.998807907
1983	150000.005960464
1984	629999.995231628
1985	430000.00715255697
1986	689999.997615814
1987	920000.016689301
1988	1200000.04768372
1989	1190000.0572204601
1990	2980000.01907349
1991	3700000.04768372
1992	5630000.11444092
1993	2240000.00953674
1994	2039999.96185303
1995	1710000.03814697
1996	1139999.98569489
1997	1039999.96185303
1998	1360000.01430511
1999	-319999.99284744303
2000	1080000.04291534
2001	2079999.9237060498
2002	2539999.96185303
2003	2420000.07629395
2004	-3369999.8855590797
2005	5780000.20980835
2006	3910000.08583069
2007	3990000.00953674
2008	4320000.17166138
2009	7730000.01907349
2010	6119999.88555908
2011	1360000.01430511
2012	4400000.09536743
2013	4340000.15258789
2014	5369999.88555908
2015	1330000.04291534
2016	2160000.08583069
2017	1600000.02384186
2018	2150000.09536743
2019	959999.978542328
2020	1850000.02384186
2021	3769999.98092651
2022	2099999.90463257