Year	constant 2015 US$
1995	45361.50711279545
1996	46463.57978137208
1997	48006.37299175917
1998	48769.50336732094
1999	47879.57069936808
2000	48707.09884489861
2001	49051.550427724
2002	49505.48408472701
2003	51115.09977034541
2004	52169.59348131463
2005	52228.94017834869
2006	52737.630038277464
2007	55169.059641438245
2008	56482.91804484626
2009	54185.76892944277
2010	53305.968054260775
2011	50973.68902301545
2012	52075.55659192165
2013	54273.28361785904
2014	54172.804806802385
2015	53000.08076476781
2016	51497.76060376612
2017	51277.892008440795
2018	50682.82329254302
2019	49345.83890446457
2020	43274.640920016536
2021	46874.00832433249
2022	47804.82496409311