Year	current US$
1979	2213178.455542185
1980	3525214.8929609377
1981	4871212.326313626
1982	4320073.604884596
1983	4117061.48424199
1984	3362821.894195527
1985	4556200.002289348
1986	5170543.832670427
1987	4367796.776316708
1988	5387104.545247395
1989	5990842.930156904
1990	7502400.362200979
1991	12392543.493797855
1992	13604099.932802062
1993	14437357.197258199
1994	17449084.59813291
2006	7219570.125756592
2007	9193455.924336247
2008	10614839.237800568
2009	10034016.282203529
2010	10566170.207921932
2011	12013969.9369592
2012	13694188.94237297
2013	12954511.559145201
2014	11060765.84886428
2015	8216345.01551516
2016	10729534.320002299
2017	11176727.69623426
2018	7795419.87867088
2019	9779463.5654699
2020	1344673.4135084003
2021	1207422.0512112316
2022	4473045.843038261