Year	current US$
1960	11300000
1961	22900000
1962	30900000
1963	33490000
1964	42800000
1965	52900000
1966	57030000
1967	34240000
1968	26740000
1969	37500000
1970	52720000
1971	68845741.2838019
1972	83048037.5800967
1973	98396779.075453
1974	47252186.6982372
1975	45595748.17447
1976	79379678.4074539
1977	98343282.6432672
1978	135832004.484656
1979	161937540.02363
1980	173812718.432024
1981	229526154.077946
1982	145173121.68618
1983	149286745.541943
1984	127603120.011275
1985	205544024.604569
1986	309837426.149499
1987	311312660.131368
1988	290741935.917966
1989	337322364.443977
1990	436117426.128523
1991	449450462.744425
1992	498323804.089265
1993	426440220.187466
1994	292913977.749003
1995	308109384.476341
1996	453731276.674067
1997	383670028.550149
1998	426396492.611392
1999	478415751.635691
2000	388881716.016599
2001	338233118.48792
2002	440104833.407005
2003	792258433.749899
2004	1046234851.96735
2005	1035688647.11431
2006	2301280989.4752
2007	2578650500.27616
2008	3515220211.15769
2009	3813240515.92261
2010	5698912854.71658
2011	8450364523.47084
2012	4085343643.5824
2013	4160805158.59372
2014	4100124741.46937
2015	4972945412.30604
2016	7152512910.32653
2017	6483459219.51031
2018	6239444061.79507
2019	6685219711.82889
2020	6298662205.06349
2021	6962726715.85852
2022	5771784787.94843
2023	5677129248.479