Year	constant 2015 US$
2011	467906900.178108
2012	470840106.3000149
2013	491194120.4838609
2014	498734758.82365704
2015	530999210.54554695
2016	558843966.3721514
2017	564125339.8432002
2018	569745914.8989176
2019	587126757.6256334
2020	581761423.3663002
2021	666434678.9111817