Year	current US$
1975	8054653.168
1976	8800554.276
1977	66182762.15
1978	67983589.17
1979	73067047.12
1980	101641563.4
1981	125045402.5
1982	106602180.5
1983	101234321.6
1984	101051979.1
1985	105437133.8
1986	110845802.3
1987	134862152.1
1988	137937210.1
1989	140336029.1
1990	157823577.9
1991	174230819.7
1992	189878479
1993	166334716.8
1994	170302322.4
1995	238739187.580498
1996	308864865.023076
1997	288915989.523746
1998	300609140.498546
1999	287757541.85649
2000	270449673.480132
2001	278971195.696164
2002	332634794.325769
2003	391700584.066581
2004	464972458.838206
2005	505278425.015019
2006	528833099.631156
2007	616676514.76815
2008	684970950.370961
2009	631471271.264598
2010	679971540.320694
2011	764994189.887504
2012	766529947.016419
2013	791457692.030841
2014	759947590.401223
2015	608942452.260751
2016	593573549.010483
2017	615776510.074754
2018	644347130.327083
2019	615742173.230997
2020	589006802.701984
2021	671785690.77925
2022	629503251.119452
2023	599361986.165438