77% (2003)

83% (2013)

86% (2018)

80% (2009)

83% (2005)

42% (1985)

80% (1999)

81% (1993)

80% (1996)

52% (1981)

81% (2020)

55% (1978)

74% (1990)

53% (1998)

75% (1983)

61% (1998)

83% (2005)

37% (1959)

82% (2018)

79% (2014)