Year	current US$
1990	97433669.4058847
1991	78130727.0125676
1992	79585238.9689642
1993	56946630.2542195
1994	51039009.2374487
1995	55105164.538812
1996	58517329.4357793
1997	50372190.42508
1998	39593328.5198732
1999	43320537.9575953
2000	45650217.5734654
2001	41375706.9504273
2002	40898766.3393376
2003	46333541.7572161
2004	52090186.6419557
2005	59312090.0179805
2006	62320126.5551659
2007	66107329.0956113
2008	79131796.7641136
2009	57015488.4895052
2010	59816653.1819656
2011	68852759.1143555
2012	59519377.1353877
2013	56696146.1981225
2014	56822545.9317809
2015	43562001.5700842
2016	40080601.5980492
2017	40850304.731176
2018	45771780.5913485
2019	44492527.7630935
2020	41465341.9011859
2021	54196305.5037239