Year	current US$
2005	48553207.84915197
2006	46037127.41693692
2007	51557552.89905264
2008	47906606.54795232
2009	62375633.3396856
2010	53173807.8100647
2011	57387392.50118577
2012	59793546.759214066
2013	65786136.50261799
2014	59299100.40773149
2015	58340989.2803062
2016	64088596.1268833
2017	49199389.5084453
2018	51703626.0198252
2019	54595526.8764729
2020	56776271.080151
2021	66099953.649223596