Year	current US$
1971	793769.9556
1972	607909.739
1973	2062166.452
1974	4513935.089
1975	6694577.217
1976	5374445.915
1977	5541872.978
1978	6057362.556
1979	6572852.135
1980	7088341.713
1981	7603830.814
1982	8119319.916
1983	16475309.369999997
1984	13463839.53
1985	21871343.61
1986	20869979.86
1987	22388044.36
1988	16612133.03
1989	14867723.46
1990	23958236.69
1991	18764524.46
1992	21334543.23
1993	20963012.7
2001	52809898.1958876
2002	62202215.2009268
2003	58583707.1339724
2004	65446538.4077905
2005	68961604.0229032
2006	78003327.7547784
2007	81801197.1012207
2008	103482459.81385
2009	81921552.6875093
2010	74029954.1372557
2011	84337265.0633016
2012	91248700.1959558
2013	122679910.247892
2014	119291080.318586
2015	129278118.787493
2016	107338352.853397
2017	152205239.839826
2018	142617525.724111
2019	177732063.154193
2020	185478904.850858
2021	220299783.212795
2022	225260864.202749
2023	222000000