58% (1982)

61% (1983)

62% (2004)

61% (1969)

57% (1984)

55% (1977)

75% (1997)

47% (1969)

40% (1997)

48% (1965)

60% (2004)

54% (1959)

43% (2003)

68% (1930)

62% (1999)

60% (1984)

53% (1963)

55% (1961)

54% (1966)

52% (1961)