Year	constant 2015 US$
1991	8471.01774225699
1992	9101.89204284719
1993	9557.592312401617
1994	9451.531771992282
1995	10577.46833641019
1996	10625.92191488177
1997	10367.027465568117
1998	10509.638211694206
1999	10566.709704942497
2000	8776.18224165056
2001	8772.034605838624
2002	8890.748306649666
2003	9197.392007012246
2004	9916.2485133964
2005	10369.76043001283
2006	10794.595549309413
2007	11169.419380589481
2008	11322.176931425054
2009	11338.047902386836
2010	11350.61529829569
2011	11292.939144402406
2012	11358.48031619061
2013	11448.708448406189
2014	11495.52718805969
2015	11786.597930903305
2016	11769.618753553219
2017	11912.038372123727
2018	12083.622667851167
2019	12041.526917425914
2020	13021.905817996534
2021	13632.4560194157
2022	13019.818637788912