Year	current US$
2002	60000
2004	40000
2005	110000
2006	330000
2007	560000
2010	1580000
2011	1760000
2012	3760000
2013	3150000
2014	3070000
2015	1970000
2016	1490000
2017	1640000
2018	1880000
2019	1680000
2020	2180000
2021	3850000
2022	490000