Year	current US$
1998	406000000
2000	109400000
2006	144000000
2007	23000000
2008	24000000
2010	4595900000
2011	4284600000.0000005
2012	3983900000
2013	3100000
2015	1822200000
2016	79400000
2017	2037000000
2018	1622700000
2019	3357770000
2020	925710000
2021	109000000