Year	current US$
1994	4563000000
1995	165900000
1996	101500000
1997	226750000
1998	301170000
1999	425210000
2000	499950000
2001	986410000
2002	935980000
2003	1113700000
2004	2206750000
2005	3436560000
2006	3820380000
2007	4666330000
2008	5736970000
2009	5105060000
2010	5250020000
2011	6103270000
2012	5787730000
2013	6750810000
2014	7776540000
2015	6903390000
2016	6688670000
2017	8235000000
2018	9287270000
2019	10432480000
2020	9914970000
2021	9646920000
2022	3300490000
2023	6800000000