58% (2007)

58% (2010)

54% (1996)

68% (2007)

73% (1986)

76% (2005)

70% (1989)

70% (2006)

74% (1999)

68% (2001)

65% (2008)

55% (2018)

71% (1993)

71% (1989)

78% (1985)

56% (2003)

67% (1996)

65% (1993)

57% (2008)

57% (2017)