1974-01-01 1970-01-01 1972-09-15 1971-01-29 1972-03-11 1972-03-17 1970-01-01 1971-01-01 1971-08-01 1975-03-17 1971-01-01 1971-01-01 1971-01-01 1997-12-03 1973-01-01 1973-01-01 1973-01-31 1972-02-09 1971-11-10 1971-01-01 1971-01-01 1971-01-01 1972-06-01