Year	current US$
1995	520000000
1997	7971200000
1998	942800000
1999	186500000
2000	4066000000
2001	672960000
2003	660020000
2004	3132480000
2005	1340919000
2006	1147161030
2012	467260000
2013	309340000
2016	1527870000
2017	1583280000
2018	1960660000
2019	3599930000
2022	1216300000