Year	current US$
1970	1053267248.9919
1971	3450385049.2282
1972	4138711272.9551
1973	5481973646.9137
1974	5999038532.3982
1975	9165588470.7915
1976	9443435592.289497
1977	11836844723.764198
1978	14811041689.6892
1979	16808568081.313
1980	18651431428.7181
1981	20468271628.5079
1982	20612100544.424896
1983	20233769475.62
1984	19775760286.401802
1985	19950059381.13
1986	26376863566.9479
1987	32231800967.219997
1988	35329541869.563995
1989	37796383872.817
1990	45904621715.599945
1991	49449871093.39462
1992	55508883253.3687
1993	56165969350.949356
1994	57685476381.44624
1995	67921882235.93676
1996	70877214490.89261
1997	69911737542.56268
1998	71723744628.53497
1999	85243177508.6896
2000	84403294507.10081
2001	91746498034.0543
2002	98188995769.1102
2003	109364617507.7305
2004	123924423489.58022
2005	132837083583.9328
2006	146805363001.06824
2007	169571600264.78302
2008	200578214910.53275
2009	187691262706.29956
2010	188736698725.9427
2011	205665679864.93695
2012	202770185860.10138
2013	214831913562.2044
2014	218845765727.86044
2015	209252345678.06934
2016	216426444087.2404
2017	229345220415.45886
2018	247600753975.59402
2019	254820345173.00864
2020	247092038158.94632
2021	271419711701.1046
2022	281054947408.8313