Year	current US$
1977	9995000
1978	16413000
1979	14792000
1980	15436666.67
1981	24043703.71
1982	32088518.53
1983	41002962.98
1984	17887575.42
1985	29142154.21
1986	63521111.12
1987	51544074.07
1988	83619029.63
1989	74335077.41
1990	82617037.53999999
1991	67039629.629999995
1992	78478518.52
1993	57448017.04000001
1994	49770817.04
1995	43476789.26
1996	51646968.15
1997	46064458.89
1998	49646452.59
1999	49403950.37
2000	52223698
2001	56293596
2002	42422750
2003	43746326
2004	88479082
2005	44249691
2006	40494967
2007	59534141
2008	61844107
2009	79322471
2010	65323576
2011	42539743
2012	53772970
2013	53766658
2014	79553411
2015	53191911
2016	52610711
2017	84786805
2018	131761360
2019	117054838
2020	84596835