Year	current US$
1995	79000000
1996	128000000
1997	161000000
1998	140000000
1999	151000000
2000	163000000
2001	156000000
2002	172000000
2003	213000000
2004	248000000
2005	250000000
2006	241000000
2007	270000000
2008	272000000
2009	264000000
2010	261000000
2011	287000000
2012	294000000
2013	342000000
2014	350000000
2015	357000000
2016	319000000
2017	349000000
2018	394000000
2019	399000000
2020	310000000