Year	current US$
1972	3113014685.2660747
1973	3917712406.085742
1974	6156664996.586974
1975	10082853840.71828
1976	15768314601.983007
1977	15726527610.1457
1978	18708866830.28618
1979	25004647897.900673
1980	26998689376.487354
1981	30833777280.647076
1982	28657631531.47295
1983	27698628507.59873
1984	27468515928.091076
1985	25570643354.667458
1986	31110713674.43152
1987	30172105351.842632
1988	29532977420.255844
1989	36804236973.757645
1990	27727795506.04197
1991	16818495687.883759
1992	26478966153.802746
1993	31078666358.217186
1994	30869371869.52537
1995	32947988263.608913
1996	33952165087.87623
1997	36737960015.92097
1998	36030079361.19306
1999	32920270948.78424
2000	36767775890.53274
2001	39257683185.74788
2002	40456186771.04176
2003	48844896766.42629
2004	62735325154.8884
2005	79946482624.2646
2006	100397733723.0779
2007	119139577166.55424
2008	137349023661.58661
2009	126934721462.13603
2010	127113823911.87297
2011	138749369186.8429
2012	166399094017.11722
2013	187082878067.84814
2014	188257822836.22562
2015	160419031200.50217
2016	139813983408.5019
2017	127353919034.6745
2018	139446509117.62036
2019	156525037862.61148
2020	142987424858.54144
2021	152945447260.17972
2022	173890289242.85046
2023	198885182287.4051