Year	current US$
2002	6344720575.300734
2003	7651123194.004753
2004	9800833630.162342
2005	11813241575.966867
2006	15215084418.100761
2007	20220179757.962803
2008	25495581604.948647
2009	29678134375.649952
2010	29998328722.086067
2011	37988837996.58806
2012	45343057783.106384
2013	49697096481.830795
2014	60460012760.72964
2015	47731428885.51364
2016	29560117545.13349
2017	42137871385.75473
2018	44779572358.96865
2019	35404254103.24103
2020	26214348650.011383
2021	29814751306.554787
2022	48946281249.98268
2023	45593043039.27394