Year	constant 2015 US$
1996	1227048826.7813766
1997	1120407712.4293065
1998	1333014814.554292
1999	1538629524.9571512
2000	2300872732.577703
2001	2651108405.7416162
2002	2911351291.659722
2003	3060633997.0615244
2004	3312102458.1505485
2005	3848504250.0257297
2006	4183559918.9896507
2007	4994571426.8066025
2008	5175494086.812542
2009	5116480732.834326
2010	5087165878.096789
2011	5401871760.185124
2012	5040262503.6178
2013	5007821893.7374325
2014	5221094595.740277
2015	5070977347.417925
2016	5421895138.816708
2017	5874938591.802185
2018	6015758750.582652
2019	6153498070.157901
2020	4935758284.813312
2021	6488118484.470698
2022	7340227423.697527
2023	7437909643.868653