48% (2002)

61% (1989)

58% (1991)

53% (1995)

54% (2010)

51% (1990)

55% (2001)

63% (2002)

57% (1993)

57% (1991)

52% (1991)

64% (1993)

66% (1999)

59% (1986)

50% (1990)

57% (1996)

48% (1995)

57% (1989)

65% (1999)

53% (1989)