Year	current US$
1995	176000000
1996	105000000
1997	141000000
1998	179000000
1999	239000000
2000	227000000
2001	235000000
2002	324000000
2003	459000000
2004	582000000
2005	563000000
2006	540000000
2007	548299987.792969
2008	510700012.207031
2009	663599975.585938
2010	440100006.10351604
2011	468299987.792969
2012	515599975.585938
2013	484200012.207031
2014	529299987.792969
2015	534299987.792969
2016	505000000
2017	542010009.765625
2018	584200012.207031
2019	712400024.414063
2020	217000000