Year	current US$
1970	4400000.095
1971	23578669.1856
1972	23529470.983999997
1973	27965207.811
1974	34857517.239999995
1975	213182771.72313902
1976	380946018.94200003
1977	470236537.0924001
1978	481096590.7929
1979	564038807.6918551
1980	707878624.6641469
1981	729537744.565558
1982	1239959297.031758
1983	1312316684.3586862
1984	1202530462.8682282
1985	1091623358.879657
1986	1171471502.4477699
1987	1617512984.523124
1988	1609026509.787685
1989	1722320574.4221764
1990	1976606210.217248
1991	1876094227.8435197
1992	2067931760.7534397
1993	2014179994.00777
1994	2510461431.7864504
1995	2526702253.925595
1996	2476633975.4799185
1997	2438354553.814618
1998	2231527751.213527
1999	2192325579.072657
2000	2274371550.380178
2001	2336188010.1061153
2002	2594098586.7980113
2003	3197738084.7683387
2004	4155168976.559379
2005	4584104658.031606
2006	4967115494.599562
2007	5634218673.547888
2008	6558933177.74815
2009	5988108066.868292
2010	6708165352.457943
2011	7739120684.308044
2012	7929715222.204863
2013	7448032725.874357
2014	7959616479.01347
2015	7643430149.220392
2016	7773600807.7169485
2017	8686904157.962116
2018	8973611428.822409
2019	9437963222.947145
2020	10396298405.755726
2021	12480190507.298767
2022	12523895361.46163