Year	current US$
1995	33000000
1996	20000000
1997	25000000
1998	47000000
1999	43000000
2000	43000000
2001	49000000
2002	143000000
2003	154000000
2004	205000000
2005	203000000
2006	261000000
2007	349000000
2008	272000000
2009	253000000
2010	288000000
2011	197000000
2012	215000000
2013	236000000
2014	257000000
2015	279000000
2016	379000000
2017	462000000
2018	526000000
2019	605000000
2020	49000000