Year	current US$
1995	362000000
1996	361000000
1997	422000000
1998	488000000
1999	506000000
2000	217000000
2001	227000000
2002	237000000
2003	272000000
2004	313000000
2005	390000000
2006	494000000
2007	597000000
2008	646000000
2009	434000000
2010	820000000
2011	918000000
2012	1069000000
2013	948000000
2014	934000000
2015	872000000
2016	648000000
2017	648000000
2018	712000000
2019	755000000