Year	current US$
1995	10000000
1996	13000000
1997	13000000
1998	16000000
1999	18000000
2000	22000000
2001	20000000
2002	24000000
2003	26000000
2004	31000000
2005	37000000
2006	41000000
2007	47000000
2008	70000000
2009	72000000
2010	77000000
2011	89000000
2012	79000000
2013	79000000
2014	84000000
2015	308000000
2016	321000000
2017	371000000
2018	345000000
2019	336000000
2020	104000000