Year	current US$
1979	5972228.52927368
1980	9025962.03375367
1981	11520147.1033956
1982	10518704.6918651
1983	8717900.2151006
1984	8541321.89358169
1985	10139011.59307739
1986	9884528.97914647
1987	11929868.78404679
1988	12628248.11672718
1989	13376597.01775793
1990	17056232.22496005
1991	14019799.974943299
1992	16554200.852153491
1993	16255032.0966163
1994	16571000.687868949
2006	25855014.1404242
2007	34481917.235082954
2008	38763616.09691448
2009	41084195.77706964
2010	42612683.70543211
2011	54406845.8769768
2012	52256564.114212
2013	61540017.77817923
2014	71427045.6191631
2015	68978670.91643779
2016	72331011.7643973
2017	61604861.3594795
2018	55632209.5240614
2019	55207598.7098822
2020	27277053.075008698
2021	36553766.1508237
2022	48341607.0728748