69% (1999)

64% (2001)

55% (2008)

76% (1993)

64% (1993)

64% (1997)

65% (2000)

46% (2012)

74% (1993)

56% (2002)

63% (2001)

51% (2000)

68% (1995)

62% (2003)

69% (1993)

57% (1996)

51% (2001)

60% (2003)

62% (2002)

55% (2001)