66% (1999)

63% (2010)

65% (1997)

64% (2000)

56% (2000)

64% (1999)

53% (1997)

57% (2008)

58% (2012)

63% (1999)

57% (2000)

58% (2003)

67% (2009)

63% (1998)

64% (2002)

69% (2000)

59% (2004)

57% (1997)

69% (1998)

63% (1986)