Year	current US$
1973	43986993.0160231
1974	112705737.107708
1975	155519354.033348
1976	50526484.7474745
1977	57653133.3936652
1978	85368133.6376607
1979	108750033.653088
1980	127098590.988372
1981	144135312.117503
1982	131930089.82036
1983	144983838.383838
1984	175076280
1985	203898115.384616
1986	244223833.333334
1987	273536290.322581
1988	299027236.276995
1989	353022820.520648
1990	386808665.876291
1991	347804032.128851
1992	389743630.408488
1993	442899831.798941
1994	465568427.215442
1995	522684712.019012
1996	621844438.957701
1997	644973536.299765
1998	767526505.94392
1999	697506613.976705
2000	705302389.18704
2001	723187157.153447
2002	711350557.20007
2003	1051413056.99482
2004	1005296599.28656
2005	1120444300
2006	1221510706.21233
2007	1516485097.01709
2008	1687498334.06209
2009	1758582651.18658
2010	2215727276.8479
2011	2729343423.98999
2012	2714659000.60923
2013	3018791463.09511
2014	3409400115.13692
2015	3811772830.41931
2016	5055864611.40247
2017	5052190883.88089
2018	5027073862.61153
2019	4920136108.64201
2020	5239773602.83109
2021	5896415883.15113