Year	current US$
1972	19999.9995529652
1973	29999.999329447703
1974	70000.0002980232
1975	100000.00149011599
1976	400000.00596046395
1977	319999.99284744303
1978	349999.99403953605
1979	829999.983310699
1980	620000.004768372
1981	569999.992847443
1982	560000.002384186
1983	680000.007152557
1984	1200000.04768372
1985	589999.973773956
1986	1399999.97615814
1987	1509999.9904632599
1988	1470000.02861023
1989	2049999.9523162802
1990	2069999.9332428002
1991	1659999.9666214
1992	2089999.9141693101
1993	2990000.00953674
1994	2619999.8855590797
1995	3809999.94277954
1996	4340000.15258789
1997	5210000.03814697
1998	4449999.80926514
1999	4840000.15258789
2000	5289999.96185303
2001	6460000.03814697
2002	3329999.92370605
2003	6159999.84741211
2004	11619999.8855591
2005	10420000.076293899
2006	17649999.6185303
2007	17590000.1525879
2008	22059999.4659424
2009	26829999.9237061
2010	25479999.5422363
2011	21159999.8474121
2012	29379999.1607666
2013	33860000.6103516
2014	26840000.1525879
2015	20280000.6866455
2016	14260000.2288818
2017	18579999.9237061
2018	22200000.762939498
2019	22209999.084472697
2020	21260000.2288818
2021	29579999.9237061
2022	22959999.084472697