Year	current US$
1974	132404334.4297955
1990	219204117.67042062
1991	228074051.67465505
1992	223176281.31186897
1993	189737153.34373713
1994	256902349.13427627
1995	263426442.99761346
1996	223843743.17270198
1997	295896914.68118
1998	213046058.76272365
1999	201419769.07842967
2000	368880172.7310512
2001	414272226.1080755
2002	329417597.77306193
2003	471795971.2669575
2004	518039555.6914527
2005	736126796.3394849
2006	642245008.6514766
2007	751126149.631708
2008	459684012.12298596
2009	337562548.2679736
2010	348774236.8050601
2011	185634891.57407558
2012	861938422.526526
2013	1040580351.6207693
2014	1041912261.733004
2015	920004427.8625544
2016	730625848.9382498
2017	714311257.6493766
2018	750293109.3578603
2019	676259481.0036876
2020	611568968.334813
2021	957124993.7379863
2022	1818473945.1337574