Year	current US$
1970	2277922736.00167
1971	2676880115.86162
1972	3283743160.76585
1973	4302468059.99573
1974	5164311167.34869
1975	6003972315.49256
1976	6212046388.31756
1977	7616150212.61638
1978	9387707744.63731
1979	11030527278.1798
1980	12567979932.3021
1981	11217775534.3073
1982	11359753537.4729
1983	11343797315.6685
1984	10683227422.4969
1985	10803582321.4081
1986	15419299753.2592
1987	19462838872.5903
1988	20718955602.5713
1989	20719744320.516
1990	25715409652.3275
1991	26917297218.9561
1992	30814737769.8152
1993	30713192252.1234
1994	32744834075.1904
1995	38209362623.0597
1996	37781907992.062
1997	34129326860.7988
1998	35086927516.7187
1999	35064045143.5163
2000	32048524207.6221
2001	32643815458.4749
2002	35801406958.04
2003	44376214002.4957
2004	50615504778.1501
2005	52993518046.4133
2006	55553216603.4865
2007	63415445084.6439
2008	71780661889.2226
2009	70299963115.1437
2010	68666157592.3772
2011	74765396508.3456
2012	72087565195.6719
2013	77149314424.2044
2014	79639769351.7605
2015	68351430687.7458
2016	70568615550.1651
2017	74834035003.1066
2018	81858334213.2131
2019	81482295581.6115
2020	86544770290.3036
2021	94505326937.5382