Year	current US$
2002	5337577.25263477
2003	5554634.88936107
2004	5761125.82578507
2005	6183233.71473428
2006	6545904.70591029
2007	6872308.45479572
2008	7328362.61756466
2009	7742515.1930514
2010	7837232.8607883
2011	8479587.2626924
2012	9991628.34745495
2013	11703375.6092628
2014	13471487.3513058
2015	14635144.7035277
2016	12721644.4816332
2017	10741401.4429058
2018	11007550.7275961
2019	12062337.6313072
2020	13206930.49584
2021	14277043.6686625