Year	current US$
1995	10611000000
1996	11497000000
1997	11750000000
1998	11923000000
1999	12451000000
2000	11285000000
2001	11147000000
2002	11745000000
2003	14603000000
2004	16495000000
2012	17675000000
2013	19429000000
2014	19669000000
2015	17558000000
2016	19421800781.25
2017	21844699218.75
2018	23919099609.375
2019	23723900390.625
2020	10926200195.3125