Year	constant 2015 US$
1995	38399.41859961858
1996	38873.308973574414
1997	40384.07888707464
1998	42715.76221037128
1999	42228.945353860414
2000	42993.45460927034
2001	42810.574783821015
2002	42572.414080039234
2003	42744.74201228033
2004	42044.80427332356
2005	42354.368255156136
2006	42791.02157855908
2007	43989.82128894347
2008	43311.6058417891
2009	43447.18703410162
2010	44216.415377330966
2011	44308.202752870915
2012	44221.21034100957
2013	43874.134849644324
2014	42426.87402043545
2015	42087.11489966706
2016	42054.10787229061
2017	41812.439248432274
2018	41646.34804553848
2019	42050.26506163541
2020	39344.29743515889
2021	40547.675136317266
2022	42718.904821561904