Year	US Dollars adjusted for inflation)
1966	18000000
1967	18000000
1968	37000000
1969	28000000
1972	8000000
1973	44000000
1974	8000000
1975	8000000
1980	4000000
1981	30000000
1982	4000000
1983	4000000
1993	21000000
1995	6000000
1997	24000000
2002	34000000
2005	82000000
2007	9000000
2013	41000000