66% (1988)

46% (1997)

70% (1970)

56% (1992)

71% (1998)

61% (2013)

61% (2006)

66% (2008)

54% (2008)

70% (1958)

69% (1973)

75% (1951)

67% (2017)

67% (1959)

76% (1962)

71% (1956)

60% (2002)

70% (1985)

39% (2007)

58% (2008)