Year	current US$
1991	80052866.8908715
1992	86955708.7513226
1993	132118276.143614
1994	87847083.129527
1995	86759318.8428217
1996	87340118.2620842
1997	121631871.064812
1998	236706990.911203
1999	199679963.642153
2000	147907025.591716
2001	200231346.912718
2002	171398337.955712
2003	169970708.614615
2004	110482184.713341
2005	95055709.9734157
2006	28077694.1529568
2007	44093411.4773928
2008	49482896.5250828
2009	406329549.421063
2010	291533899.029617
2011	936245875.599621
2012	751098296.114676
2013	845322228.087791
2014	975398193.705927
2015	572750223.613138
2016	832360781.437212
2017	971114145.402434
2018	1179205090.41573
2019	1188592631.40332
2020	1245320957.01595