Year	current US$
1995	173000000
1996	198000000
1997	221000000
1998	254000000
1999	264000000
2000	309000000
2001	291000000
2002	295000000
2003	272000000
2004	310000000
2005	352000000
2006	333000000
2007	326000000
2008	327000000
2009	359000000
2010	395000000
2011	396000000
2012	399000000
2013	382000000
2014	407000000
2015	463000000
2016	503000000
2017	530000000
2018	549000000
2019	624000000
2020	214000000