64% (1988)

56% (1981)

77% (1979)

63% (1982)

37% (2001)

38% (1972)

75% (1971)

54% (1989)

73% (2001)

43% (1964)

40% (1987)

61% (1985)

86% (2018)

66% (1993)

68% (2009)

45% (2015)

54% (2010)

77% (2008)

100% (2006)

88% (1996)