Year	constant 2015 US$
1990	10600594206.198427
1991	14670917587.441257
1992	22126712410.60085
1993	25845966628.21277
1994	28139259943.310074
1995	29616715503.114124
1996	31378868802.432228
1997	30335570676.571693
1998	31039655205.90781
1999	30126117658.246178
2000	30200483412.609646
2001	31750378049.026917
2002	32573847569.94496
2003	33669959369.508522
2004	35580939089.31756
2005	34939447433.99206
2006	35304704053.50792
2007	38889620470.25929
2008	43372033508.0539
2009	49626380923.24768
2010	52979378995.89581
2011	52188033929.250244
2012	55908533239.48996
2013	59352198310.70852
2014	61506619123.47419
2015	62691130386.06966
2016	65347457231.8615
2017	65959439714.76975
2018	65994551089.381355
2019	60004354692.05045
2020	44234273122.235115
2021	40817065265.76876
2022	39342671541.27348
2023	39051298246.39592