Year	constant 2015 US$
1995	557.0076988459971
1996	615.0122864046195
1997	644.9312281847036
1998	681.9909829762413
1999	739.24488058876
2000	818.4511621471452
2001	869.2820945408728
2002	942.2885502916533
2003	994.1127521075583
2004	1068.1384736137436
2005	1178.942616643215
2006	1292.16105114422
2007	1462.5129267232423
2008	1582.835239462338
2009	1732.3454235131464
2010	1923.9606155163794
2011	2201.3949468811
2012	2387.7870593601747
2013	2582.160212563557
2014	2801.8605016365946
2015	3028.0522875810834
2016	3279.8198906777543
2017	3570.874832749641
2018	3849.9743622888236
2019	4083.112649765095
2020	3971.545012458698
2021	4488.917891093546
2022	4617.14407088243