Year	current US$
2008	2329775889.8491287
2009	2348178660.7390943
2010	2450633626.2725224
2011	2876210652.910439
2012	2870336537.596777
2013	3151971259.520948
2014	3328066712.012839
2015	2936341667.9980826
2016	3024440432.533669
2017	3259426619.340583
2018	3639879873.3544884
2019	3668159773.2239456
2020	3676284794.438588
2021	4318129071.408378
2022	4273540459.935473
2023	4801505336.808296