Year	current US$
1995	30000000
1996	40000000
1997	42000000
1998	42000000
1999	40000000
2000	49000000
2001	61000000
2002	74000000
2003	85000000
2004	87000000
2005	91000000
2006	120000000
2007	134000000
2008	130000000
2013	177000000
2014	165000000
2015	143000000
2016	137000000
2017	148000000
2018	184000000
2019	263000000
2020	82000000