Year	current US$
1977	2240000.00953674
1980	6639999.8664856
1981	4429999.82833862
1982	2859999.89509583
1983	3410000.08583069
1984	3880000.1144409203
1985	3119999.8855590797
1986	2279999.97138977
1987	1620000.00476837
1988	2940000.05722046
1989	3079999.92370605
1990	4510000.228881841
1991	2470000.02861023
1992	2589999.91416931
1993	3160000.08583069
1994	6110000.1335144
1995	8329999.923706049
1996	7989999.771118159
1997	6750000
1998	6909999.84741211
1999	5949999.80926514
2000	3680000.0667572
2001	13720000.2670288
2002	10329999.923706101
2003	22309999.4659424
2004	6309999.94277954
2005	4710000.03814697
2006	6250000
2007	6119999.88555908
2008	6559999.94277954
2009	6329999.92370605
2010	6599999.90463257
2011	6360000.1335144
2012	5532797.81341553
2013	7400422.09625244
2014	7470507.62176514
2015	7043667.79327393
2016	6904083.7287902795
2017	5152331.35223389
2018	5501170.15838623
2019	5387484.07363892
2020	5333139.8963928195
2021	5479792.59490967
2022	6728199.95880127