Year	current US$
2012	35196398.5078037
2013	41643123.713322
2014	33666280.3553045
2015	40678860.1540029
2016	38176009.7984225
2017	39989620.3638054
2018	38707118.2504296
2019	68372159.8088741
2020	43645178.7315309
2021	42405910.342931695
2022	30554783.35358202