44% (1972)

60% (1984)

80% (1970)

0% (1979)

57% (1996)

48% (1972)

58% (1968)

37% (1975)

60% (1971)

57% (2000)

49% (2006)

57% (2007)

61% (1964)

50% (1987)

47% (1966)

50% (2000)

0% (1979)

0% (1983)

70% (1980)

50% (1972)