Year	current US$
2000	27000000
2001	22000000
2002	22000000
2003	24000000
2004	28000000
2005	28000000
2006	43000000
2007	51000000
2008	64000000
2009	99000000
2010	121000000
2014	501000000
2015	521000000
2016	458000000
2017	689000000
2018	1144000000
2019	1481000000
2020	345000000