Year	current US$
1972	49999.99888241298
1974	169999.9962002039
1975	159999.99828636646
1976	239999.99463558168
1977	79999.99821186061
1978	150000.00037252915
1979	139999.99873340124
1980	319999.9984353779
1981	269999.99769032
1982	459999.9990314243
1983	1399999.9985098834
1984	2459999.9729543915
1985	2669999.9962002016
1986	5199999.878183011
1987	9410000.000149015
1988	6900000.140070917
1989	10310000.43079257
1990	9139999.782666566
1991	31940000.835806087
1992	20509999.414905906
1993	14969999.78274107
1994	19030000.41283667
1995	19150000.371038936
1996	14759999.988600612
1997	17560000.272467732
1998	12829999.979585405
1999	12320000.106468795
2000	14370000.051334504
2001	14539999.730885036
2002	11869999.982416628
2003	15660000.480711466
2004	10529999.963939192
2005	6349999.964237213
2006	7339999.88622963
2007	8350000.141188498
2008	9759999.940171832
2009	9140000.194311146
2010	7229999.9818205815
2011	8219999.9056756515
2012	8310000.078752635
2013	8509999.791160218
2014	9489999.948069453
2015	7980000.013485551
2016	3999999.947845931
2017	3470000.0956654525
2018	1980000.0358372882
2019	4129999.8722970467
2020	2750000.0223517446
2021	3159999.9889731416
2022	2040000.0307708974