Year	current US$
1960	26943546.478116624
1961	29515424.404414546
1962	50771655.35429261
1963	62818525.11957458
1964	70846987.32855698
1965	71410810.83123596
1966	65939852.914319865
1967	72357447.6776995
1968	76343640.50311632
1969	85012891.22403614
1970	95512627.99162804
1971	104954865.83051148
1972	116257095.8936974
1973	171385616.3221703
1974	311584817.2915367
1975	275298407.14208055
1976	304665660.15971494
1977	348827333.0468709
1978	384211648.6582711
1979	568348371.7340958
1980	1023762095.6746147
1981	1156656678.9748847
1982	1194134306.3852167
1983	1215274929.408823
1984	1351850299.956289
1985	1227120963.452311
1986	736631969.1737049
1987	958951543.4731033
1988	898779925.220906
1989	1159530947.187051
1990	1449116806.099803
1991	1134481545.079777
1992	1193589825.2473638
1993	1149866814.4988184
1994	1035379949.3079215
1995	1369151207.1401384
1996	1739316143.9972048
1997	1755897583.7436953
1998	1487018188.9019659
1999	1702267046.4972482
2000	2591933855.4542875
2001	2165209455.4044423
2002	2473412893.423178
2003	2831441511.175116
2004	3750252271.5827937
2005	4987839329.918794
2006	6253140817.891542
2007	6014868764.427499
2008	8551335536.760634
2009	6269575239.20125
2010	9010344990.621576
2011	11524199117.77101
2012	10276401661.279543
2013	9506330379.38899
2014	9521187262.551205
2015	5080489797.900448
2016	4598648630.270379
2017	5676136551.136512
2018	9190930867.976067
2019	7854704718.757371
2020	4669939816.003809
2021	7833386313.102904
2022	10093186512.054384
2023	8717056857.111387