Year	constant 2015 US$
2000	5159099439.449751
2001	4697392220.824904
2002	4242599972.0642548
2003	3796983356.392636
2004	3885415182.5405397
2005	3946586069.8007445
2006	4017065570.3396754
2007	3982889661.5877786
2008	3702301461.3290157
2009	3399505569.3910046
2010	3513203631.581167
2011	3539001788.3822093
2012	3511075948.546029
2013	3514134492.9090395
2014	3500038592.8012533
2015	3446447576.3537264
2016	3431287834.7283716
2017	3446181615.9743342
2018	3490065078.574046
2019	3504692899.4406166
2020	3300302347.877717
2021	3480756465.29532
2022	3487937395.538909
2023	3618523941.8204756