Year	constant 2015 US$
1995	1355.604985369368
1996	1472.1837976505394
1997	1588.1093931333437
1998	1679.1947420172257
1999	1786.9375611831365
2000	1919.4848494276814
2001	2049.2004036293492
2002	2216.511959518012
2003	2418.8919728902397
2004	2643.7852576581195
2005	2899.5141855298216
2006	3243.531129031234
2007	3674.705468133504
2008	4004.0343805894677
2009	4301.653526975971
2010	4704.247228763041
2011	5067.867595806467
2012	5442.986884893104
2013	5774.195712781243
2014	6189.892306407867
2015	6527.291515006287
2016	6909.051454914645
2017	7344.922982324629
2018	7758.751642653323
2019	8180.538101689879
2020	8225.66863187002
2021	8839.798041832551
2022	9127.994239326852