Year	current US$
1995	95000000
1996	81000000
1997	124000000
1998	129000000
1999	153000000
2000	149000000
2001	154000000
2002	182000000
2003	212000000
2004	224000000
2005	258000000
2006	337000000
2007	380000000
2008	450000000
2013	396000000
2014	414000000
2015	400000000
2016	374000000
2017	465000000
2018	547000000
2019	568000000
2020	277000000