Year	current US$
1970	4710000.012069939
1971	4759999.990463256
1972	5359999.973326915
1973	4580000.014975669
1974	6519999.939948318
1975	8780000.068247318
1976	5800000.000745056
1977	5859999.952837828
1978	8740000.10453165
1979	8579999.901354315
1980	9909999.912604682
1981	10289999.93391335
1982	9289999.946951866
1983	12309999.991208302
1984	14479999.780654905
1985	17100000.096485015
1986	18089999.96446072
1987	22009999.992325895
1988	18929999.92519617
1989	30530000.062659375
1990	39570000.10460616
1991	38799999.956041574
1992	38919999.89748001
1993	51060000.598430626
1994	59109999.29904933
1995	64680000.543594316
1996	88900001.09374519
1997	37369999.703019865
1998	37929999.76873398
1999	21550000.071525563
2000	20499999.850988384
2001	21970000.028610237
2002	18990000.00953675
2003	18469999.96900559
2004	23419999.95708465
2005	26670000.195503235
2006	22419999.83787537
2007	26920000.195503224
2008	23770000.159740448
2009	22839999.794960015
2010	21439999.938011166
2011	23840000.092983246
2012	18975287.258625034
2013	21672725.43907166
2014	32160076.85661317
2015	32633814.45407866
2016	32442280.054092407
2017	35277099.37840705
2018	33626937.09135056
2019	46044000.744819626
2020	34773999.75061418
2021	32735999.941825863
2022	29327999.94945526