Year	current US$
1975	153729456.77301985
1976	198433178.8660657
1977	251990396.18852594
1978	359785265.3905474
1979	305541544.1617748
1980	324668232.8835186
1981	348138298.7982405
1982	543617022.722386
1983	357446809.4612945
1984	798138298.7568032
1985	875265957.4468087
1986	731382978.7234048
1987	859840425.5319148
1988	896010638.2978723
1989	807446808.5106379
1990	358510638.297872
1991	411170212.765957
1992	542819148.93617
1993	651861720.909136
1994	818617097.477655
1995	683244733.850988
1996	666223461.841124
1997	637234101.870196
1998	724734114.833855
1999	858938914.967802
2000	981175733.776596
2001	1030580533.51064
2002	1160828532.35816
2003	1349279139.62766
2004	2778483776.41844
2005	3154904509.21986
2006	3462270455.58511
2007	3680851063.82979
2008	3915691489.3617
2009	3831117021.2766
2010	4233244680.85106
2011	3295744680.85106
2012	8332446808.51064
2013	8500531914.89362
2014	8571276595.74468
2015	9112500000
2016	10997606382.9787
2017	11351595744.6809
2018	11915425531.9149
2019	11940159574.4681
2020	11614627659.5745
2021	13283510638.2979
2022	14385638297.8723
2023	15530319148.9362