Year	current US$
2007	34487053.5085773
2008	26929743.39365607
2009	39595138.658229105
2010	41937969.43972649
2011	42318779.503198355
2012	46349439.24464683
2013	50290920.38075062
2014	52851873.68303896
2015	39543647.00853585
2016	46623475.46078262
2017	51332679.2479179
2018	56499895.13300681
2019	47339582.15514381
2020	57169269.73817329
2021	55573205.79954148
2022	52942965.04564823
2023	57623455.32329351