Year	current US$
1970	2964994593.4431033
1971	3309424027.046244
1972	3869940293.7361813
1973	4743734476.479222
1974	5240324602.843531
1975	5619073539.541915
1976	6226774254.888363
1977	6366358139.671705
1978	7446318652.606851
1979	8173509737.91084
1980	8974030447.440922
1981	8881878721.358583
1982	10980793631.097815
1983	13930721781.691889
1984	16961437913.42811
1985	20981531155.030273
1986	2751703077.591132
1987	2852514020.23674
1988	3345280300.149875
1989	3376179268.7424197
1990	3739413147.29453
1991	4230269469.565401
1992	4648220625.079719
1993	4697865273.745266
1994	4859603136.424924
1995	5305081601.635648
1996	5552338373.379237
1997	5406000745.349214
1998	5112508058.432362
1999	4967846776.387666
2000	4294334992.260331
2001	4038460900.7743015
2002	4268977939.981337
2003	4779716483.278703
2004	5031887403.680483
2005	4003333584.140065
2006	4179199242.7288175
2007	6218767649.952863
2008	6872979187.761212
2009	6548704517.07605
2010	6776357832.569049
2011	6651747215.633153
2012	7516065225.985678
2013	7971453880.912442
2014	8494333643.360827
2015	8650959072.692966
2016	8446956140.281195
2017	10274041364.973598
2018	11448771551.23511
2019	12866865430.22725
2020	12718854509.814932
2021	13828314339.3716
2022	18675229260.453445
2023	21019281946.84169