Year	current US$
1992	351000000
1993	349000000
1994	489000000
1995	454000000
1996	553000000
1997	525000000
1998	508000000
1999	510000000
2000	471000000
2001	423000000
2002	538000000
2003	433000000
2004	480000000
2005	490000000
2006	495000000
2007	510000000
2008	600000000
2009	590000000
2010	660000000
2011	950000000
2012	970000000
2013	1040000000
2014	1130000000
2015	1020000000
2016	957000000
2017	1026000000
2018	1065000000
2019	565000000
2020	569000000
2021	602000000
2022	843000000
2023	524000000