Year	current US$
2006	20754100000
2007	29940120000
2008	48186490000
2009	25319200000
2010	18401500000
2011	22908600000
2012	19410000000
2013	20564610000
2014	54729710000
2015	24152160000
2016	18956146617.5743
2017	18330180816.835697
2018	18980060000
2019	13341180000
2020	23174370000
2021	31049780000
2022	44130490000