Year	current US$
2011	10238665075.2591
2012	10357251629.7198
2013	12660499215.0331
2014	14132668943.3749
2015	13982660974.777
2016	16743162412.1425
2017	19998555597.4378
2018	20608359023.1793
2019	20726782363.7944
2020	17593663696.1671
2021	20192232160.1761