51% (2005)

49% (2005)

0% (1978)

43% (1980)

60% (1991)

63% (1982)

59% (1982)

0% (1976)

65% (1982)

45% (1991)

60% (1991)

55% (1978)

63% (1977)

58% (1982)

10% (1976)

62% (1981)

58% (1995)

53% (1995)

50% (1976)

64% (1991)