Year	current US$
1982	13600000
1983	13200000
1984	21200000
1985	25100000
1986	14400000
1987	15300000
1988	17100000
1989	24771000
1990	17242000
1991	24267000
1992	24913000
1993	18059000
1994	24150000
1995	26650000
1996	26450000
1997	24350000
2001	30267168.4857087
2002	26815374.92765564
2003	35856828.537209876
2004	42410835.226315804
2005	41735221.9253886
2006	39578105.6470976
2007	68240427.1522972
2008	85180951.0836191
2009	84550716.24317528
2010	100500608.75025508
2011	99569747.85197106
2012	72504667.03322823
2013	87225137.1016136
2014	116483875.8744671
2015	130852336.536651
2016	137556594.0112309
2017	154762568.52914232
2018	165116634.75986448
2019	165895891.71978512
2020	132106321.912061
2021	168287894.974302
2022	179088677.637907