Year	constant 2015 US$
1995	10670.002062279787
1996	11473.844566019507
1997	11615.449089474856
1998	11751.355580975707
1999	12217.672243415906
2000	12505.042566023603
2001	12765.109007397798
2002	13963.202183642563
2003	13854.862468483157
2004	16850.597476182094
2005	15803.20790864232
2006	16178.495352376029
2007	16975.533537192543
2008	19101.37119918946
2009	19572.61706146782
2010	19018.508736416374
2011	20315.13460555435
2012	19485.880380195584
2013	20753.00071356066
2014	22286.754962655377
2015	22801.049768985155
2016	23394.336713851582
2017	24141.951733030426
2018	24694.497791705333
2019	25391.297860914274
2020	25547.389038198682
2021	26662.514952311496
2022	25907.816096357885