55% (2006)

69% (2013)

56% (2005)

67% (2007)

59% (2013)

67% (2009)

59% (2006)

50% (1972)

59% (2006)

54% (2008)

64% (2004)

64% (2008)

66% (2005)

59% (2009)

50% (2004)

57% (2007)

64% (2008)

53% (2006)

60% (2001)

39% (2006)