50% (2001)

46% (1990)

59% (1984)

58% (1989)

52% (1993)

57% (1991)

50% (1994)

56% (1991)

45% (1989)

39% (1993)

53% (1991)

61% (1996)

49% (1992)

51% (1994)

46% (1993)

40% (2002)

57% (1992)

60% (1990)

55% (1994)

47% (1994)