70% (1999)

76% (1993)

64% (2001)

57% (1996)

62% (2003)

64% (1993)

69% (1993)

55% (2008)

68% (1995)

64% (1997)

56% (2002)

51% (2001)

64% (2000)

46% (2012)

59% (2003)

63% (2001)

51% (2000)

62% (2002)

74% (1993)

55% (2001)