Year	current US$
1995	40553.4882471773
1996	39111.01516391708
1997	34659.04430802553
1998	35760.723232834425
1999	34989.61588476147
2000	32930.97965713081
2001	32248.527528719525
2002	33733.79298577316
2003	40939.39319309208
2004	45346.77969431412
2005	48033.98178700115
2006	50174.76228804169
2007	51128.29793779026
2008	52789.14023493114
2009	55813.21022351482
2010	63191.043154472594
2011	70650.76029842204
2012	68518.98936427968
2013	69446.63098548523
2014	68999.91811344337
2015	66347.41615864841
2016	63668.848941924
2017	63071.250219476235
2018	63208.827086201156
2019	62588.33618262272
2020	62971.41617352906
2021	69631.65823749073