Year	constant 2015 US$
1997	2736010099.904346
1998	2870074754.755878
1999	2600287781.641385
2000	2680896704.4137287
2001	2710382244.1271133
2002	2761986207.2866817
2003	2830556912.759649
2004	2955838797.3047066
2005	3079410727.3393054
2006	3343205923.0928316
2007	3570883265.452369
2008	3828799329.0695972
2009	3606916694.2148175
2010	3705541738.498782
2011	3825173338.5744977
2012	3720983620.1919394
2013	3853040581.4181275
2014	3921767211.596819
2015	4054730077.577178
2016	4174315433.82382
2017	4371195571.759155
2018	4593160022.61922
2019	4779777587.717707
2020	4048142110.542917
2021	4576160079.608025
2022	4869340027.242338
2023	5160619234.927781