Year	current US$
1990	125372848.301027
1991	125545345.24552
1992	138726721.376702
1993	143120672.0204
1994	146238119.706457
1995	171377795.769832
1996	184363336.134522
1997	181324261.460244
1998	143442327.659553
1999	165653753.131271
2000	171034081.164394
2001	166273032.037288
2002	171156525.213335
2003	188583322.578721
2004	207841418.868608
2005	232681860.226638
2006	255245023.762405
2007	295031770.150635
2008	360750326.40677
2009	344191213.671589
2010	419495958.146421
2011	491465934.262663
2012	527138786.946582
2013	528992551.029926
2014	557361052.962708
2015	505679993.020414
2016	479075264.427754
2017	479700375.408436
2018	545482771.96246
2019	566066619.959473
2020	577169163.568186
2021	642341345.973121