Year	current US$
1971	19999.9995529652
1972	59999.9986588956
1973	579999.9702721839
1974	490000.01326203346
1975	2829999.9497830826
1976	1689999.9994784591
1977	1440000.0050663932
1978	409999.99269843154
1979	5190000.226721171
1980	13149999.704211902
1981	14309999.657794787
1982	11150000.387802722
1983	11970000.263303518
1984	6860000.215470787
1985	11550000.404939052
1986	17239999.989047643
1987	19109999.904409006
1988	21070000.03755088
1989	30979999.93525447
1990	42909998.98687001
1991	55390000.38057564
1992	35469999.767839864
1993	44010000.58278446
1994	29760000.202804796
1995	39959999.89658598
1996	35730000.77158213
1997	31059999.411925726
1998	32219999.469816703
1999	30960000.403225426
2000	30299999.751150604
2001	23980000.026524078
2002	19300000.078976147
2003	23140000.188723203
2004	28400000.113993853
2005	46359999.02896583
2006	43520000.994205445
2007	57950000.53942203
2008	58770000.6850064
2009	54429999.44463367
2010	48090000.7896125
2011	50679999.589919984
2012	40870001.157745734
2013	59039999.23914671
2014	57840000.599622756
2015	37319999.784231216
2016	36130000.29511756
2017	36069999.56071382
2018	38679999.95499852
2019	26210000.518709447
2020	35329999.893903725
2021	26189999.67910353
2022	26170000.41343271