Year	constant 2015 US$
1997	962072333.1107529
1998	940959991.968203
1999	1128735110.3274293
2000	1142764883.4621558
2001	1055599398.7912642
2002	1014942235.9081588
2003	726798306.0775874
2004	932445837.3607919
2005	1079215821.927573
2006	1239994376.0637965
2007	1071789754.2250531
2008	1129752276.647927
2009	1216027354.001955
2010	1470771967.0199957
2011	1469448129.2033544
2012	1741772737.3586047
2013	1877067904.7266831
2014	1961437530.7444286
2015	2232109159.6808
2016	2026896358.6035533
2017	2054775054.990313
2018	2220536206.9513674
2019	2308705903.3274317
2020	2352178926.9175134
2021	2369968493.4994497