60% (2011)

44% (2004)

55% (2003)

0% (2004)

53% (2012)

57% (2003)

52% (2005)

47% (2008)

60% (2009)

58% (2012)

0% (2014)

62% (1977)

62% (2013)

65% (2012)

60% (2005)

68% (2014)

52% (2006)

52% (2011)

0% (1995)

56% (2007)