0% (1950)

50% (1959)

60% (1953)

50% (1976)

65% (1955)

50% (1993)

50% (1960)

55% (1969)

95% (1999)

50% (1988)

65% (1964)

58% (1990)

92% (2004)

50% (1974)

67% (1952)

50% (1969)

77% (2007)

68% (1978)

0% (1970)

0% (1970)