Year	current US$
2006	3509271322.8970876
2007	3770972465.556034
2008	3898421069.1108203
2009	3720820572.5949864
2010	3641807698.50873
2011	3655001074.637875
2012	3741337400.890727
2013	3841769486.588554
2014	3984078131.323593
2015	4116697563.727035
2016	4264354209.502058
2017	4500051121.060924
2018	4762431581.312601
2019	5119953770.636975
2020	4908227917.413006
2021	5165551744.129912
2022	5637941235.561674