Year	constant 2015 US$
1988	438612060.5575994
1989	443799817.5003339
1990	455779351.272809
1991	513583425.52502334
1992	526289657.7456096
1993	542967961.677248
1994	555736543.9885026
1995	551814454.8031859
1996	558242887.737352
1997	557754231.7083881
1998	563889495.266335
1999	565134692.7141839
2000	572653179.6781038
2001	650329432.1545787
2002	755579445.0775288
2003	767587762.8937683
2004	744465216.6758221
2005	628705632.18702
2006	637443817.6437217
2007	683907341.2181157
2008	822416295.2891805
2009	826057662.704774
2010	831191569.7192706
2011	887114485.2495433
2012	969756838.7471541
2013	986743744.0683564
2014	1058208254.4168969
2015	1226253121.5310173
2016	1321944811.1262312
2017	1341426664.5646148
2018	1397427147.2301316
2019	1277811960.652037
2020	1419504341.4878037
2021	1557402994.649372
2022	1831554504.6494956
2023	1892891488.673047