Year	current US$
1970	5550000.015646227
1971	7339999.962598082
1972	7980000.026524073
1973	6129999.976605179
1974	6860000.073909767
1975	11629999.794065954
1976	7890000.117942691
1977	5919999.927282339
1978	6279999.956488611
1979	10100000.098347658
1980	11510000.105947262
1981	8470000.04351139
1982	9250000.007450582
1983	6969999.797642227
1984	5080000.143498188
1985	6870000.038295992
1986	8529999.926686281
1987	6900000.151246788
1988	6660000.0411272
1989	6630000.183358782
1990	6319999.970495697
1991	5399999.916553501
1992	4610000.066459183
1993	3490000.052377579
1994	5299999.980255964
1995	6579999.893903729
1996	8870000.00104308
1997	10549999.995157123
1998	12240000.01698733
1999	11820000.119507324
2000	2759999.9662488676
2001	3849999.9344348917
2002	4749999.83981252
2003	5859999.956563107
2004	6060000.099241739
2005	6000000.000000004
2006	7400000.07301569
2007	7480000.186711553
2008	7219999.954104421
2009	6830000.013113014
2010	5109999.95470047
2011	2879999.995231628
2012	2508901.789784428
2013	2831121.9960451126
2014	2879759.7270458946
2015	2189815.925623406
2016	1993399.0761637685
2017	2360881.2987804404
2018	1422915.369272232
2019	1528997.57027626
2020	1211503.1182765958
2021	1956554.3681383142
2022	5219416.856765748