Year	current US$
1960	185000000
1961	151000000
1962	158000000
1963	211000000
1964	221000000
1965	300100006.10351604
1966	504190002.441406
1967	451160003.66210896
1968	438440002.441406
1969	449000000
1970	418000000
1971	428000000
1972	540000000
1973	403000000
1974	587000000
1975	152000000
1976	1000000
1985	1000000
1986	1000000
1987	1000000
1988	1000000
1989	2000000
1990	2000000
1991	1000000
1992	2000000
1993	2000000
1994	10000000
1995	1000000
1997	48000000
1998	-9609999.65667725
1999	-150000.005960464
2000	6789999.96185303
2001	8670000.07629395
2002	14649999.6185303
2003	33729999.5422363
2004	30489999.7711182
2005	28139999.3896484
2006	45229999.5422363
2007	40580001.8310547
2008	62630001.0681152
2009	78139999.3896484
2010	92059997.55859381
2011	88290000.9155273
2012	81980003.3569336
2013	105480003.35693401
2014	93559997.55859381
2015	80099998.4741211
2016	103830001.831055
2017	116160003.662109
2018	113260002.13623
2019	96440002.44140631
2020	136240005.493164
2021	142809997.55859402
2022	153419998.168945