Year	current US$
1960	888420015.307143
1961	840580000.108108
1962	887390002.496541
1963	904570015.71916
1964	800860012.728721
1965	1074499993.86072
1966	1288840025.73788
1967	1473300001.88202
1968	1518870009.9904099
1969	1701369957.60165
1970	1764119997.7342
1971	2040270000.02936
1972	2306280014.20572
1973	2421879970.32702
1974	2877359982.79601
1975	2505739979.79052
1976	2201660000.45836
1977	2234010014.64762
1978	2944349992.2324
1979	3464959982.49203
1980	3911450014.05105
1981	4382619966.365399
1982	3938030020.62812
1983	3990109980.6707397
1984	4074929915.4561
1985	4117219956.4352603
1986	5165079995.22984
1987	6113060119.699691
1988	7081229995.41834
1989	7443490009.970961
1990	8059170010.7380705
1991	7794559966.973961
1992	10139560017.0288
1993	9703379845.63783
1994	9899780047.24905
1995	10441589925.278
1996	8456159858.241675
1997	7108580163.657666
1998	8840529851.242897
1999	10195439996.413914
2000	8813160100.34084
2001	7670310080.021618
2002	7676680060.02903
2003	7332029943.555598
2004	7763009976.021951
2005	9265909940.24277
2006	7555189963.34076
2007	8339119774.81842
2008	8444590152.263639
2009	9501000046.73004
2010	9439890192.5087
2011	7499870029.44946
2012	8868360128.40271
2013	12010670212.745699
2014	9495230051.99432
2015	8525499851.584431
2016	7720130126.95313
2017	8414689969.53964
2018	8280039897.918699
2019	7119960081.33888
2020	12714009916.782398
2021	10515909809.1125