63% (1982)

76% (1979)

63% (1988)

37% (2001)

56% (1981)

43% (1964)

60% (1989)

68% (2009)

66% (2003)

61% (1985)

66% (1993)

66% (1996)

54% (2010)

67% (2005)

47% (2015)

66% (2008)

75% (1971)

45% (2015)

76% (2015)

62% (1998)