69% (1995)

67% (1999)

71% (1995)

67% (1981)

53% (2004)

71% (2016)

68% (1988)

72% (2020)

66% (2009)

78% (2009)

62% (1980)

69% (1999)

66% (1997)

73% (2001)

58% (2002)

74% (2004)

59% (1988)

57% (1996)

56% (2006)

66% (2003)