Year	constant 2015 US$
1990	14785403098.586292
1991	15179885634.53117
1992	16661150724.221966
1993	17719186447.14759
1994	18931253485.25294
1995	20385719019.079876
1996	19826143101.372963
1997	20227393499.58056
1998	21037314987.484005
1999	21263153695.423973
2000	21673436872.596245
2001	22147974958.783417
2002	22251471640.48483
2003	22710653660.404015
2004	22921492855.979267
2005	24041178726.519802
2006	25453535429.250664
2007	26758249942.502262
2008	26582857743.563904
2009	24092631133.578304
2010	24658960889.41754
2011	25551386842.73587
2012	26230437422.431583
2013	26840122335.36824
2014	26732765121.713608
2015	27560550000
2016	28084000624.810272
2017	28547470121.490433
2018	29314332202.666725
2019	29799218159.320698
2020	27924623025.65084
2021	31877052371.55478
2022	32052788401.23986
2023	32394165282.833447