Year	current US$
1968	1399999.97615814
1969	1460000.03814697
1970	2549999.95231628
1971	2329999.92370605
1972	740000.009536743
1973	839999.973773956
1974	779999.971389771
1975	2519999.98092651
1976	3299999.95231628
1977	3109999.89509583
1978	6219999.79019165
1979	6320000.17166138
1980	7340000.15258789
1981	8470000.26702881
1982	8409999.84741211
1983	5280000.20980835
1984	5219999.79019165
1985	4420000.07629395
1986	5840000.15258789
1987	6869999.88555908
1988	10890000.3433228
1989	12989999.7711182
1990	9689999.5803833
1991	10329999.923706101
1992	6320000.17166138
1993	4710000.03814697
1994	3480000.01907349
1995	4090000.1525878897
1996	2960000.03814697
1997	4030000.2098083496
1998	6539999.96185303
1999	3720000.02861023
2000	1679999.94754791
2001	1169999.95708466
2002	779999.971389771
2003	970000.028610229
2004	1110000.01430511
2005	2250000
2006	4340000.15258789
2007	4119999.88555908
2008	7369999.88555908
2009	6179999.82833862
2010	5340000.15258789
2011	4639999.8664856
2012	5198722.36251831
2013	4454536.91482544
2014	6483591.5565490695
2015	5947643.756866461
2016	5688024.52087402
2017	5758082.38983154
2018	7154697.41821289
2019	9130182.26623535
2020	8704508.781433111
2021	8920454.02526855
2022	7930337.42904663