PDO - Negative

Years missing: 1979, 1975, 1966, 1953


Years missing: 2002, 1999, 1990, 1973, 1957


Years missing: 1990, 1975, 1973, 1969, 1963, 1954


Years missing: None


Years missing: 1991, 1966


Years missing: None


Years missing: 1964, 1959


Years missing: 1978, 1959, 1952


Years missing: 1977, 1973, 1969, 1964, 1956, 1953


Years missing: 1990, 1977, 1967, 1963


Years missing: 2004, 2000, 1998, 1989, 1985, 1977, 1965, 1952


Years missing: 2007, 1977, 1957, 1954