Year	current US$
2000	6985885880.368936
2001	7220924022.94959
2002	8143730493.655477
2003	10248418403.030241
2004	11783792155.321661
2005	12842146927.429007
2006	14095993770.65331
2007	16895298540.310972
2008	20506667560.418095
2009	19001981048.248764
2010	18359840527.107006
2011	19822481532.577507
2012	18631400792.269135
2013	19356623565.64708
2014	19626847057.5626
2015	16613607546.844555
2016	16816431287.359196
2017	17532148790.476635
2018	19052867105.01302
2019	18781914570.89119
2020	18745759098.877674
2021	20717993887.298424
2022	21128144284.541817
2023	24838707983.570667