Year	current US$
2000	39345726853.152664
2001	41037977399.42487
2002	44572537169.44458
2003	55114104806.66951
2004	65242374883.72396
2005	73045758735.64546
2006	82615164420.39383
2007	99015919210.52754
2008	113951664784.19354
2009	101057949320.13937
2010	105824906176.6532
2011	117989959579.28856
2012	121172349627.94408
2013	127835999520.71033
2014	131525693558.44986
2015	122407016320.86565
2016	129346697478.8006
2017	143388400014.333
2018	152814842719.03827
2019	155112419089.26697
2020	140195403795.83932
2021	157277495364.72522