Year	current US$
1987	13734115773.773851
1988	14865683792.815212
1989	17113216643.864794
1990	19455612551.411804
1991	22025749199.883617
1992	27018494522.323006
1993	32087393821.90634
1994	35707971345.83143
1995	42474082934.60925
1996	48310279036.48939
1997	48246149478.316414
1998	35341163880.96209
1999	37898421052.631584
2000	43426052631.57895
2001	45624736842.10526
2002	49108157894.73685
2003	51475789473.68421
2004	55572894736.84211
2005	63438120858.959854
2006	71464653968.44264
2007	86168743085.59334
2008	101437332144.62474
2009	98774493878.99513
2010	123625968500.69559
2011	142321755893.70337
2012	154147515492.25735
2013	161459439165.01556
2014	169447822393.86957
2015	156746880164.19946
2016	158254085839.20462
2017	165560229753.18112
2018	190125968680.06732
2019	197761239067.51285
2020	184887433798.93146
2021	192939194529.95743
2022	207314897980.56064
2023	213618201661.11118