Year	constant 2015 US$
1995	2475301651.4580164
1996	4094364171.7770004
1997	5440875349.256756
1998	4957513422.87816
1999	3300855585.707109
2000	4146758486.068905
2001	7104255826.07709
2002	9063651174.497534
2003	10712317203.823038
2004	14024938098.18225
2005	13460766642.841047
2006	16020677975.681326
2007	19451666955.009556
2008	21412826953.60345
2009	16726356411.56248
2010	16714221604.946356
2011	17911887895.96313
2012	17800697881.679245
2013	18953621527.33502
2014	19918381776.545986
2015	20707751966.30317
2016	22162855600.870956
2017	24620340497.332886
2018	27276788822.49727
2019	30186204187.65768
2020	29095212765.57126
2021	34421899911.70504
2022	39954696188.38279
2023	39522403958.959274