62% (2008)

60% (1999)

53% (2004)

82% (1995)

56% (2007)

65% (1997)

69% (1995)

55% (2002)

73% (2009)

66% (1997)

62% (2002)

66% (2011)

69% (1993)

67% (1999)

68% (1994)

68% (1999)

68% (2000)

63% (2007)

53% (2006)

50% (1993)