75% (1996)

49% (1970)

56% (1964)

50% (1967)

71% (1967)

47% (2003)

30% (1961)

55% (1959)

60% (1964)

68% (1991)

62% (1930)

65% (1966)

30% (1968)

70% (1966)

0% (1965)

50% (1990)

65% (1989)

60% (1962)

35% (1968)

50% (1953)