66% (2002)

48% (2001)

58% (1979)

65% (2000)

66% (1977)

63% (2001)

57% (1988)

50% (2002)

54% (1993)

66% (1989)

60% (2001)

55% (1997)

0% (1970)

51% (1988)

55% (1986)

50% (1979)