Year	current US$
1975	1900010000
1976	3100000000
1977	3814710000
1978	5001760000
1993	1286800000
1994	2803000000
1995	9161700000
1996	17024439999.999998
1997	15181250000
1998	14903260000
1999	21827030000
2000	26685660000
2001	7381240000
2002	11760560000
2003	27544170000
2004	42600420000
2005	36440220000
2006	36314580000
2007	43885010000
2008	48712710000
2009	59183540000
2010	86641520000
2011	107089650000
2012	90995750000
2013	345776630000
2014	116638450000
2015	89428040000
2016	101008000000
2017	106329000000
2018	170460420000
2019	388666940000
2020	1539564820000
2021	1508229410000
2022	1613044750000