51% (2005)

49% (2005)

58% (1982)

63% (1982)

65% (1982)

64% (1981)

50% (1976)

66% (1991)

58% (1995)

56% (1985)

45% (1991)

43% (1980)

0% (1978)

64% (1993)

59% (1991)

0% (1978)

50% (1979)

70% (1996)

55% (1978)

60% (1991)