Year	current US$
1977	2000000
1978	2900000.095
1979	2700000.048
1980	4099999.905
1981	2400000.095
1982	5599999.905
1983	5300000.191
1984	6400000.095
1985	7199999.809
1986	7699999.809
1987	7900000.095
1988	9100000.381
1989	10000000
1990	12000000
1991	13399999.62
1992	14199999.81
1993	16000000
1994	17100000.38
1995	123300000
1996	130770000
1997	130100000
1998	128100000
1999	126482718.239056
2000	135975253.752763
2001	198443413.131253
2002	250646486.381642
2003	320879535
2004	319546352.12
2005	420346410
2006	513156290.876979
2007	617920087.505542
2008	604768805
2009	513091873.253071
2010	530688786
2011	520219673.310912
2012	562342745.046091
2013	596399211.049776
2014	593925384.378772
2015	551988507.633386
2016	545423773.110502
2017	560366619.096707
2018	533509663.136669
2019	553377977.061178
2020	524786747.848096
2021	594130696.449927
2022	620836435.957359
2023	633253164.676506