Year	US Dollars adjusted for inflation)
1971	36000000
1973	22000000
1974	23000000
1975	50000000
1977	18000000
1983	76000000
1985	2000000
1986	7000000
1988	7000000
1989	64000000
1994	65000000
1997	6000000
2004	43000000
2005	22000000
2007	13000000
2008	13000000
2009	28000000
2010	117000000
2012	21000000
2013	33000000
2014	114000000
2015	16000000
2016	18000000
2017	80000000
2018	1000000
2019	100000000
2020	66000000
2021	80000000
2022	51000000