Year	current US$
2012	17988475.8573025
2013	22284402.735997
2014	16788370.1417595
2015	23162030.082196
2016	19314749.869518
2017	23756590.2243368
2018	31967861.2863645
2019	49089619.979728
2020	35817495.3833222
2021	39608670.1806635
2022	35809302.27786304