Year	constant 2015 US$
1995	35871.03391812658
1996	34997.524260852915
1997	35878.061623950925
1998	35881.09317050923
1999	36285.89583505448
2000	36274.44844767967
2001	38144.543997672044
2002	38857.68481325214
2003	39477.33618611638
2004	39076.83408412626
2005	40079.925795156945
2006	40659.613033500966
2007	41846.65213913251
2008	42127.67753829915
2009	40262.70623275726
2010	41213.682945565764
2011	41954.490244199034
2012	41244.161425939485
2013	42159.59472652843
2014	43560.25027457264
2015	43493.88562288864
2016	44338.19940922586
2017	44685.17030575608
2018	45436.05344272786
2019	45988.22440751371
2020	44340.47957855845
2021	43844.00764197133
2022	45262.8611804393