Year	current US$
1977	5088556.7963573
1978	6763245.8873511
1979	9889145.55509636
1980	10790740.859913351
1981	9399614.15997365
1982	9947549.66765043
1983	9902326.95160279
1984	10261472.4515607
1985	8938778.05622841
1986	10188929.04464211
1987	12145644.04041005
1988	15390999.64590767
1989	15324697.253902879
1990	20693969.5261817
1991	30508967.591705818
1992	40368026.436272904
1993	35050175.28818592
1994	27514389.499746304
1995	33767227.01674647
1996	33149580.781880457
1997	38693090.68697191
1998	28836170.4638344
1999	19172613.92720983
2004	40912107.14839064
2005	57993868.946181595
2006	61929203.74619182
2007	62170352.357688405
2008	62880478.140165
2009	65545132.93154399
2010	105826497.89389437
2011	105847813.23838146
2012	88239476.4466795
2013	86529217.68317257
2014	72960176.54232372
2015	70932086.16304682
2016	85438982.40673816
2017	85688484.794467
2018	85884372.63277797
2019	98043316.14166749
2020	86218964.80755301
2021	89460701.14064415
2022	101524757.45980388
2023	123384700.23968709