Year	constant 2015 US$
2006	36524106.351726815
2007	38427135.710398406
2008	42453026.73435182
2009	39007566.82756039
2010	35501099.23346549
2011	35245305.28046356
2012	36638737.10651411
2013	37562261.871527724
2014	38343921.321806364
2015	39129452.50626234
2016	42289221.40132036
2017	43340131.47905464
2018	46605457.35778828
2019	48936758.72938345
2020	45638165.8242863
2021	50380680.36988324
2022	48202685.57387878