Year	constant 2015 US$
1995	1498.4896293519214
1996	1632.132949991276
1997	1769.5851995768808
1998	1881.943115797053
1999	2013.9569615600524
2000	2169.858821304816
2001	2328.4097536982003
2002	2533.715195503359
2003	2781.1196186911716
2004	3054.345929478187
2005	3367.4977723741804
2006	3793.9923664118837
2007	4329.261923359835
2008	4741.555549629256
2009	5120.608487978242
2010	5622.615601165155
2011	6094.51220438989
2012	6576.6453686059285
2013	6998.9330916934005
2014	7543.082335042244
2015	7978.193814703721
2016	8474.113642372433
2017	9041.929316928228
2018	9577.293845691094
2019	10127.910976809151
2020	10276.087550747765
2021	11145.973617223
2022	11489.346691642333