Year	constant 2015 US$
1990	17640798606.615025
1991	12063600365.49295
1992	13386491065.194725
1993	14498059080.920362
1994	17501479849.87972
1995	18790461292.734615
1996	18666589584.702755
1997	17570698904.727608
1998	16756119928.107264
1999	14604397010.8654
2000	18364002206.304317
2001	21515595888.27387
2002	22027974316.95111
2003	23910721124.247314
2004	27985249291.49381
2005	28272750282.134026
2006	37606926188.30035
2007	47792945738.28465
2008	53105890117.717834
2009	41154978105.830574
2010	40488340287.79651
2011	43052381489.26795
2012	40804896543.748856
2013	40869368286.305336
2014	42412563916.137375
2015	45398980993.67721
2016	44331157012.29498
2017	48102796933.01111
2018	50426100647.776634
2019	54976946049.03045
2020	55071977397.55871
2021	60553536874.35795
2022	64297410964.61308
2023	62608552177.76508