71% (1980)

23% (2011)

67% (1980)

42% (2015)

57% (1986)

50% (1994)

60% (2003)

48% (1974)

60% (1973)

66% (1978)

63% (2000)

63% (2008)

60% (1988)

69% (1983)

49% (2008)

56% (2008)

55% (1965)

77% (1988)

15% (2001)

49% (1979)