Year	current US$
1996	566278113.8201011
1997	236717347.985641
1998	146117955.4590987
1999	280065535.46854585
2000	826247044.4882598
2001	469086122.3215579
2002	524967431.86203074
2003	777207763.6733885
2004	828149410.6044168
2005	1161112535.8514721
2006	1502567448.7397969
2007	1470532907.5446155
2008	1605292256.8722646
2009	1919685033.1978579
2010	2238853553.7051845
2011	2715058422.077021
2012	2598194167.8223944
2013	2961437972.9673967
2014	3394844309.476952
2015	2886393551.972203
2016	3230854581.542846
2017	3605811075.325314
2018	4149391098.9576283
2019	4012850267.6128287
2020	3351761723.9358706
2021	4074391980.390598
2022	4089813407.082739
2023	3623605958.02312