Year	current US$
1975	42092420.47388402
1976	38955639.74092631
1977	42097693.501885116
1978	57813322.65079547
1979	64197630.22579924
1980	73315873.37736279
1981	88302689.03700298
1982	85056293.74175881
1983	91608108.10810809
1984	87585783.23826239
1985	85344646.97255395
1986	98313502.6737968
1987	109171684.6380059
1988	153599931.64145947
1989	146439411.99841082
1990	149024540.82420126
1991	181982107.0492056
1992	171808329.00304356
1993	176789739.8843931
1994	251835630.9650053
1995	282829490.91195214
1996	300730659.95616525
1997	278600633.161852
1998	261696179.62466487
1999	254021394.44901806
2000	265155215.42496565
2001	242689519.75708118
2002	254092062.87018996
2003	271436672.3995948
2004	312204899.73373455
2005	366504097.75803494
2006	399543135.3320955
2007	426411393.61231476
2008	495296187.41174567
2009	473543964.6583542
2010	539892770.1780406
2011	602258663.3494482
2012	681221429.5322762
2013	631613827.184989
2014	619205928.3619479
2015	638506541.5616376
2016	592129169.2877967
2017	656375436.9441079
2018	686905821.1747375
2019	709196810.8003899
2020	678175458.0985539
2021	758766240.1801647