Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	124356763.626984
1993	114721930.770521
1994	106638680.748615
1995	24743073.4046126
1996	16419154.6836184
1997	18161905.0416832
1998	5582467.85215452
1999	7487372.33212901
2000	12770007.2362441
2001	6363876.5203963
2002	12291024.601378
2003	15774231.4021712
2004	65769240.3352426
2005	72323490.1763358
2006	437377145.781094
2007	618598999.61261
2008	1010581359.57589
2009	1161536641.84871
2010	1743891952.91673
2011	2760594666.62068
2012	2657455598.26447
2013	2168138139.92239
2014	1866825989.79555
2015	1615320586.70594
2016	1935266530.11608
2017	1603046477.06549
2018	2236454186.64349
2019	1752108078.78235
2020	2791189640.54217
2021	3848727305.25103