Year	current US$
1970	311507774.42
1971	2638756274.1380005
1972	3261377172.776
1973	4454100965.339
1974	4957720335.137
1975	8187690908.051001
1976	8399126667.081999
1977	8865042706.912
1978	11098252463.579
1979	12684123391.205002
1980	14035462238.128
1981	12383182240.114998
1982	11589930592.046
1983	10879475699.834997
1984	10211687765.824999
1985	10278883992.359001
1986	13008260774.433
1987	15777664392.529001
1988	17446838375.585
1989	17315566719.868
1990	21109710234.96101
1991	20535366266.856506
1992	23970648775.571934
1993	23703531614.33281
1994	21612544676.779514
1995	26484737517.706146
1996	26076196340.258484
1997	24389798266.482635
1998	25431750505.98362
1999	27816201242.018826
2000	26694893740.28686
2001	28496047555.39974
2002	29297031139.48834
2003	35767846455.37919
2004	43008476918.82717
2005	45468100556.21507
2006	49987093536.96647
2007	61852579959.70186
2008	84836883693.0466
2009	81931478951.3018
2010	76841693556.39581
2011	83551128835.66873
2012	76873937233.4089
2013	83669352497.5021
2014	80088560418.17809
2015	73680668873.14877
2016	75208245948.13507
2017	81792835358.09245
2018	90363956374.54034
2019	91516698154.6352
2020	94404354374.47829
2021	107265167481.18903
2022	107348400516.58603