50% (2000)

61% (1964)

0% (1979)

58% (1968)

62% (1969)

42% (1982)

50% (1987)

77% (1969)

0% (2001)

37% (1975)

57% (2007)

70% (1981)

80% (1964)

57% (1997)

62% (1976)

57% (2000)

66% (1969)

80% (1970)

67% (1981)

80% (1978)