Year	current US$
2001	16359925019.03154
2002	19014099505.649918
2003	22360205315.535824
2004	29014846624.459797
2005	32513581822.16506
2006	35024708854.37348
2007	42914890519.36971
2008	50409648467.16466
2009	45261482093.04522
2010	52596268769.32798
2011	62837657634.226875
2012	76690521872.14409
2013	91606244214.3478
2014	88088679092.31532
2015	69087899584.1835
2016	58941076538.00482
2017	72343375117.84862
2018	79423074237.74721
2019	82567114084.48518