Year	current US$
1970	1240.42553191489
1971	842.553191489362
1972	1015.74159525379
1973	1330.73170731707
1974	1485
1975	1811.07142857143
1976	122.5125
1977	937.671428571428
1978	1401.4
1979	1768.8
1980	2287.725
1981	3358.575
1982	12889.0666666667
1983	12739.5714285714
1984	15845.2380952381
1985	6928.196
1986	25250.9714285714
1987	28851.0095238095
1988	28812.980952381
1989	31449.6285714286
1990	33883.4571428571
1991	36329.9619047619
1992	40859.6228377564
1993	30236.3983749576
1994	22571.2743628186
1995	34983.6413793103
1996	34819.9310344828
1997	34568.0689655172
1998	75275.2
1999	32551.8554305661
2000	32216.1219206903
2001	36110.4615384615
2002	40387.3990384615
2003	57800.167353303
2004	56458.920580117
2005	56072.2671303269
2006	68846.8406239106
2007	63841.5639547628
2008	112547.576907956
2009	110058.313929147
2010	132238.286849481
2011	152399.675865765
2012	175505.289266399
2013	146035.865056795
2014	234811.73272447
2015	213774.391365995
2016	165776.277720608
2017	204717.597326342
2018	104053.845793802
2019	139970.686062667
2020	127863.398375365
2021	118806.690570386