Year	current US$
1960	673081724.7511678
1961	699161944.5580972
1962	739286907.5927778
1963	759345863.7326667
1964	802482183.7287778
1965	833563472.9981
1966	900264584.5908293
1967	956436932.101291
1968	1031669637.3955349
1969	1056391055.5961725
1970	1111859570.882523
1971	1199507631.0760274
1972	1341590690.4136515
1973	1653062335.0028615
1974	1917508190.0468938
1975	2283049215.3533945
1976	2181844178.553396
1977	2358930406.068901
1978	2669755115.1093483
1979	3463565853.81023
1980	5201818347.7988205
1981	4759333998.367463
1982	4784977325.958034
1983	4686457031.226905
1984	3905938480.8611917
1985	3802557894.8719015
1986	4347989788.092567
1987	3212900555.8090987
1988	3189456965.048204
1989	3175638332.6447086
1990	3931334875.0137587
1991	3254713056.021707
1992	3714966678.33381
1993	4063298919.2868047
1994	3522227092.2283926
1995	3838100903.7497377
1996	4931861038.707632
1997	4262965419.74998
1998	4401967632.737184
1999	4277903780.2913055
2000	4629247203.84524
2001	5438332601.907981
2002	5351701663.408074
2003	6372498889.665848
2004	5064732626.293891
2005	5859269752.61332
2006	6395712490.943041
2007	8524620889.577468
2008	10725137723.654873
2009	9616879409.437893
2010	9982711338.07029
2011	11551819617.874023
2012	11578975061.947945
2013	12423555455.38532
2014	12522957399.228104
2015	11323020701.301685
2016	11848613858.441998
2017	13176313593.550934
2018	13760033282.292511
2019	14104664678.506332
2020	13051441203.947355
2021	14554754116.542673
2022	15302510500.052753
2023	16031702914.91953