Year	current US$
1994	824300000
1995	475800000
1996	290300000
1997	845700000
1998	1133700000
1999	855200000
2000	4935280000
2001	663190000
2002	1300210000
2003	1130600000
2004	3671490000
2005	1699663000
2006	2050361030
2007	2651445470
2008	1802013580
2009	527229999.99999994
2010	965100000
2011	719130000
2012	4980060000
2013	3245440000
2014	2139620000
2015	3814750000
2016	1461770000
2017	1669680000
2018	1868010000
2019	3799460000
2020	3641650000
2021	9339270000
2022	1502280000