37% (1980)

67% (2005)

64% (1986)

43% (1964)

45% (2015)

37% (2001)

63% (1988)

47% (2015)

83% (2013)

69% (1982)

88% (1996)

71% (2010)

49% (2003)

66% (1996)

54% (1992)

56% (1981)

60% (1985)

69% (2009)

0% (2006)

73% (2001)