Year	current US$
2012	4735502488.49073
2013	3986385760.407289
2014	4260567955.5597167
2015	3798042962.870045
2016	4065367473.581653
2017	3899942635.8876023
2018	4192938205.234241
2019	3690290807.3375483
2020	2975385181.6740975
2021	4609550580.750167
2022	6684426911.061429