Year	current US$
1977	3900000.095
1978	4099999.905
1979	4500000
1992	10000000
1993	25000000
1994	50000000
1995	75000000
1996	95000000
1997	150000000
1998	200000000
1999	300000000
2000	320000000
2001	335700000
2002	376500000
2003	438800000
2004	518800000
2005	615700000
2006	697500000
2007	739600000
2008	819900000
2009	770300000
2010	824800000
2011	913600000
2012	1016300000
2013	1081300000
2014	1140200000
2015	1197500000
2016	1268100000
2017	1394700000
2018	1504800000
2019	1686400000
2020	1855000000
2021	2149900000
2022	3227200000
2023	4668000000