59% (2010)

70% (2008)

56% (2012)

59% (2010)

62% (2014)

54% (2015)

43% (2012)

62% (2013)

49% (2013)

54% (2007)

55% (2013)

45% (2013)

62% (2005)

59% (1997)

65% (2005)

70% (2009)

70% (2007)

63% (2015)

34% (2009)

57% (2012)