Year	current US$
1999	1916161566.6118617
2000	1829504429.2612896
2001	1838349430.1176934
2002	1974574993.2361734
2003	2340591325.4224014
2004	2669698072.6548114
2005	3144845255.2878532
2006	3321859883.5248976
2007	3690977612.681714
2008	3924811708.271157
2009	3606073875.640945
2010	3909039011.0270333
2011	4552537435.976491
2012	4787980060.260919
2013	4988510409.563432
2014	5337917880.80527
2015	5283074963.824345
2016	5442337825.28986
2017	5831556034.25062
2018	6078732299.77119
2019	6046267099.037462
2020	5245403878.555077
2021	5088855541.489727
2022	5719860540.096747