34% (1998)

62% (1996)

58% (1998)

49% (2001)

60% (1994)

49% (2003)

65% (1998)

74% (1991)

45% (1992)

67% (1993)

57% (1996)

45% (1993)

61% (2004)

46% (1989)

45% (2004)

49% (1991)

51% (1996)

61% (1993)

59% (1991)

57% (1999)