Year	current US$
1993	152000000
1994	258000000
1995	1273200000
1996	273500000
1997	310300000
1999	55000000
2007	3500000
2008	37000000
2010	98716000
2011	684000000
2012	45000000
2014	384600000
2015	59000000
2016	65000000
2018	78000000
2019	165200000
2020	205230000
2021	24000000
2022	765330000