62% (2012)

58% (2005)

65% (2016)

63% (2017)

67% (1996)

59% (2000)

58% (2006)

63% (2003)

68% (1998)

58% (2003)

57% (2009)

59% (2010)

56% (2004)

56% (2005)

62% (1995)

63% (1998)

46% (1995)

51% (2010)

55% (2000)

57% (2007)