70% (1998)

66% (2004)

66% (2005)

65% (2004)

65% (2005)

63% (2012)

59% (2011)

64% (2000)

45% (2003)

54% (1997)

69% (2005)

41% (2003)

58% (1998)

78% (2003)

79% (1996)

70% (1997)

63% (1993)

71% (2005)

67% (1997)

93% (1989)