Year	constant 2015 US$
1995	5549.344332131141
1996	5928.386314816482
1997	6304.815212732013
1998	6597.109603706176
1999	6910.446610180649
2000	7314.393806309299
2001	7415.764542188673
2002	7569.114478120615
2003	7791.230908089816
2004	8006.477926589131
2005	8388.36485240851
2006	8854.309972412855
2007	9403.767802670169
2008	9931.2240138713
2009	10098.148050332047
2010	10403.099895664815
2011	10899.44908671058
2012	11041.962717845445
2013	11160.034547703961
2014	11571.61344908055
2015	12089.975971671589
2016	12433.610281356669
2017	13021.48814096435
2018	13801.809374195518
2019	14421.359358176382
2020	14203.67034212301
2021	15138.063796974684
2022	16509.749298132112
2023	16544.29664710115