Year	current US$
1970	96975640.4421732
1971	119068811.569784
1972	113960474.3083
1973	182974713.418746
1974	517994542.974078
1975	263517248.275862
1976	336717168.262655
1977	413432667.829727
1978	507002544.529261
1979	753421109.26194
1980	736670382.537921
1981	718140618.36442
1982	607296268.148662
1983	932349377.701545
1984	1015074826.74772
1985	1018167087.76596
1986	1076999366.13902
1987	1089989706.25107
1988	1090057509.55501
1989	1276431186.35808
1990	906775316.666667
1991	558231433.696798
1992	2384551838.78664
1993	2058206919.11733
1994	2076808337.11061
1995	1655502171.38237
1996	1833684034.73614
1997	1758369930.76162
1998	1591680986.48622
1999	1795345907.70187
2000	2303671794.69915
2001	2100245498.34855
2002	2227516288.25271
2003	2817956375.83893
2004	3068552290.46488
2005	3604122739.72603
2006	3659431254.30739
2007	4052444897.95918
2008	5044638467.26191
2009	3601241765.11467
2010	3982402233.07747
2011	5201526159.4203
2012	5844720507.32405
2013	5978561671.36811
2014	5686841918.48207
2015	4059569192.42273
2016	3898188447.53393
2017	4449638097.69205
2018	4992887768.50994
2019	4927653511.23189