Year	current US$
1977	14600000
1978	16400000
1979	19151851.8518519
1980	20600000
1981	18700000
1982	18300000
1983	18600000
1984	21600000
1985	30592592.5925926
1986	42814814.81481483
1987	44259259.25925924
1988	49333333.33333333
1989	52703703.70370368
1990	63018518.518518515
1991	71399999.99999997
1992	75133333.33333328
1993	86525925.92592594
1994	100074074.07407415
1995	98203703.7037037
1996	105196296.2962964
1997	104544444.4444447
1998	116192592.59259222
1999	140899999.9999998
2000	150368516.4172434
2001	143239442.2443055
2002	148481006.93779203
2003	163416747.31557304
2004	155938104.6520363
2005	160022848.8349258
2006	181117929.459087
2007	271519162.2581482
2008	298291122.05700994
2009	301012051.1759993
2010	309325517.4527143
2011	332256055.58442223
2012	367711762.09837294
2013	384273652.2032853
2014	429623598.1957299
2015	463085114.8361737
2016	483011982.544222
2017	533762955.6483818
2018	573463932.121578
2019	610650212.5216962
2020	396661253.886967
2021	485940838.70039994
2022	650281471.8518517
2023	785618294.8148146