Year	constant 2015 US$
1995	10837.522482018892
1996	10188.126860643823
1997	10388.207161972643
1998	11724.47655188016
1999	12048.94986101803
2000	11934.295911999661
2001	12988.870240177217
2002	13191.332624560024
2003	13280.88082427968
2004	16594.25294280999
2005	17225.11758560749
2006	15005.089422707219
2007	13520.475690253354
2008	13549.357928789954
2009	13807.539793516486
2010	13958.857723799327
2011	15700.540743733789
2012	17440.373016273203
2013	16019.310283005565
2014	16878.098630912977
2015	16960.356362915845
2016	16218.629283762353
2017	18313.279142443458
2018	17283.51301760582
2019	18993.3167829761
2020	18933.324276031773
2021	16363.319862541755
2022	17884.98870487821