Year	current US$
1993	3343033858.88092
1994	4683967135.51795
1995	6788236325.1901
1996	7254256533.27871
1997	4506023119.02842
1998	5827894763.22455
1999	4547238245.59445
2000	3943408351.39654
2001	4707922754.19797
2002	5183555330.57701
2003	5338154966.00662
2004	7870914558.45562
2005	11296243758.2492
2006	13380728506.4116
2007	19135655207.8539
2008	21323216551.3019
2009	9330594744.20457
2010	7420885421.70936
2011	7889610383.12333
2012	10109545051.0639
2013	9846800367.04403
2014	12448860649.2914
2015	18405406545.272
2016	17770509758.9826
2017	19420527581.6103
2018	22605154493.2441
2019	23526005854.9643
2020	20305369727.6336
2021	26333976312.7594