Year	current US$
1970	300881000.40338844
1971	385272802.31118447
1972	472621207.9552745
1973	636830883.8749741
1974	699292667.7713339
1975	774871119.8859274
1976	762615464.9947754
1977	849467642.0934159
1978	1015057000.1280903
1979	1202971931.7556412
1980	1459615119.3268037
1981	1149102564.102564
1982	1028491082.4651245
1983	859329388.5601578
1984	795763055.0125663
1985	723437733.5416808
1986	1341447534.766119
1987	1925385197.1907077
1988	2186940208.4476137
1989	2278131654.3816543
1990	2939394012.5543213
1991	3426756054.341406
1992	3255597239.6486826
1993	3705075792.9104476
1994	3887986496.262358
1995	4411022167.487684
1996	4145573941.368078
1997	4035433017.5913396
1998	4265252278.284063
1999	5071791381.519702
2000	4378738108.621186
2001	4679412609.5988245
2002	5038048013.344715
2003	6244662568.893713
2004	7448923681.527819
2005	7288754166.935405
2006	7816106443.267048
2007	9759117927.655325
2008	11853640474.963278
2009	9814595728.886713
2010	9457490356.833351
2011	11853863094.747105
2012	11463634847.053127
2013	12032790606.953367
2014	13177315584.058386
2015	10398064118.56015
2016	10754088413.320648
2017	11704208687.376492
2018	11504480929.066658
2019	12636298021.686255
2020	12303037461.584469
2021	15561045777.639284
2022	14299390632.192663
2023	15548444990.58655