64% (2011)

59% (2014)

63% (1995)

56% (2005)

62% (2005)

56% (2005)

66% (1999)

64% (1997)

66% (2005)

64% (2011)

60% (2013)

60% (1999)

55% (2005)

53% (2002)

59% (2010)

49% (2004)

55% (2000)

45% (1994)

34% (2000)

45% (1993)