Year	current US$
1970	740000.009536743
1971	319999.99284744303
1972	289999.99165535
1973	239999.994635582
1974	200000.00298023198
1975	300000.011920929
1976	129999.995231628
1977	219999.998807907
1978	519999.980926514
1979	370000.00476837205
1980	319999.99284744303
1981	209999.993443489
1982	150000.005960464
1983	209999.993443489
1984	150000.005960464
1985	330000.013113022
1986	349999.99403953605
1987	129999.995231628
1988	409999.99642372096
1989	1019999.98092651
1990	1489999.9648332591
1991	6790000.230073933
1992	6619999.933987863
1993	13549999.99701977
1994	19340000.001713622
1995	41700000.13709065
1996	45150000.12516975
1997	14780000.038444994
1998	17879999.725148074
1999	13240000.177174805
2000	12930000.096559517
2001	11870000.056922438
2002	12459999.978542328
2003	16620000.094175342
2004	17840000.182390206
2005	19860000.11861322
2006	21559999.912977234
2007	20749999.940395355
2008	20460000.038146973
2009	21980000.197887424
2010	23860000.133514404
2011	22600000.0834465
2012	18714311.450719837
2013	21855747.401714314
2014	24014031.8274498
2015	25506760.65683365
2016	21167057.87181853
2017	25133929.908275615
2018	23999782.741069794
2019	25784999.907016754
2020	28647000.0743866
2021	19698000.192642223
2022	28760000.288486462