60% (1999)

62% (2008)

82% (1995)

53% (2004)

56% (2007)

66% (1999)

62% (2002)

72% (2009)

55% (2002)

66% (1997)

66% (2011)

69% (1995)

69% (1993)

66% (1997)

68% (2000)

68% (1994)

68% (1999)

63% (2007)

78% (1991)

50% (1993)