Year	current US$
1995	106000000
1998	594000000
1999	200200000
2000	75000000
2001	10000000
2002	0
2008	127400000
2010	16000000
2015	156740000
2017	160000000
2018	143000000
2019	877000000
2020	7800000
2022	25300000