Year	current US$
1995	1477000000
1996	1433000000
1997	1328000000
1998	1469000000
1999	1439000000
2000	1458000000
2001	1067000000
2002	1225000000
2003	622000000
2004	589000000
2012	316000000
2013	311000000
2014	2563000000
2015	2196000000
2016	2273600097.65625
2017	2315899902.34375
2018	2556800048.82813
2019	2067699951.17188
2020	406600006.10351604