Year	constant 2015 US$
1995	2561.6644167064846
1996	2683.8559705446787
1997	2825.7215101153975
1998	2910.7396605169856
1999	2983.3857972132405
2000	3122.4274459717626
2001	3220.6146196555997
2002	3354.2731100724795
2003	3544.2131809275356
2004	3781.960551612067
2005	4034.1084541487457
2006	4400.220498365388
2007	4828.587331503008
2008	5131.956067906029
2009	5286.114555413335
2010	5691.847244904094
2011	6170.810151589199
2012	6470.431055037788
2013	6747.814401643625
2014	7056.022654949526
2015	7278.6308829159725
2016	7552.352297026651
2017	7906.904938663114
2018	8205.913453579606
2019	8505.82688987092
2020	8404.38613590999
2021	9013.436322928472
2022	9297.346399401198