Year	current US$
1970	195331503.703959
1971	233568276.151768
1972	241629089.809475
1973	464338944.87886
1974	581172670.508062
1975	1022521387.2769
1976	1798481256.83864
1977	1487446576.72414
1978	1066336672.5404
1979	587995306.596427
1980	2079205456.04929
1981	2486081609.83014
1982	2618279610.05646
1983	2219843912.95985
1984	2230623694.22244
1985	2015807161.50975
1986	2121035638.52971
1987	1872821542.86527
1988	2597120361.7861
1989	2326184268.16146
1990	2609404849.23959
1991	2883611007.62419
1992	2638333988.49599
1993	1701754571.64077
1994	1928613704.81114
1995	2100620967.94802
1996	2584844853.34947
1997	2338662075.80747
1998	2461583746.69106
1999	2407808559.13569
2000	1724684064.92648
2001	2402187259.3598
2002	2755386905.1674
2003	3496488323.90418
2004	3816887151.60692
2005	4534326385.32989
2006	4668578183.93814
2007	5341699401.44637
2008	6466811435.57481
2009	6344238537.9576
2010	6399998634.13266
2011	7658355122.43889
2012	7617685277.7464
2013	8900028773.26103
2014	11032548275.0644
2015	9341818786.98526
2016	9221282536.97688
2017	9392194194.43292
2018	10277665654.5551
2019	10153886401.632
2020	9909584144.62052
2021	10548966346.7248