Year	current US$
1995	22000000
1996	37000000
1997	19000000
1998	50000000
1999	45000000
2000	54000000
2001	59000000
2002	125000000
2003	144000000
2004	207000000
2005	142000000
2006	196000000
2007	218000000
2008	249000000
2009	242000000
2010	319000000
2011	460000000
2012	558000000
2013	643000000
2014	529000000
2015	473000000
2016	536000000
2017	618000000
2018	822000000
2019	1036000000
2020	573000000