Year	current US$
1975	576160296.16222
1976	1491060902.3157127
1977	1493717944.7853246
1978	1921732135.7804737
1979	2691568648.900939
1980	4078872404.8717947
1981	2721873151.282051
1982	395083192.9699343
1983	1199037392.4919739
1984	1383487727.2918746
1985	1637504139.097982
1986	2293067726.957373
1987	3974467406.32065
1988	5944259794.100582
1989	7146530294.503295
1990	7842109603.650169
1991	8578596074.819319
1992	10024929348.45227
1993	10472054476.227219
1994	12265959838.640167
1995	17799419115.34427
1996	19896178678.947
1997	21500825768.714504
1998	19181547527.98152
1999	16992594942.839455
2000	17627794715.24072
2001	16429270645.620522
2002	16246234679.085503
2003	18004692279.56959
2004	24202017455.172733
2005	30732775188.04361
2006	42537549758.27173
2007	47321600263.67113
2008	43443119414.87145
2009	41702413139.04552
2010	55625219175.259636
2011	54515130389.1949
2012	62667143897.953896
2013	62875237511.47352
2014	56271469011.470245
2015	55118327903.98441
2016	52581363756.79172
2017	54794873772.46892
2018	57999055877.60628
2019	54756483054.34074
2020	48485339975.935524
2021	52455780214.62986
2022	50867375142.13736
2023	64886103356.96247