Year	current US$
2012	4551267.670001834
2013	5481027.744710446
2014	4280919.976532457
2015	5042089.9391174335
2016	4476089.991629123
2017	5982290.066778661
2018	5155398.741364481
2019	8614939.982071523
2020	6340579.323470594
2021	7873000.085353849
2022	8341929.912567137