73% (2014)

74% (1990)

68% (2018)

74% (1976)

62% (2014)

63% (2002)

58% (1981)

63% (2003)

59% (1994)

50% (1991)

67% (1992)

64% (1978)

66% (1994)

64% (1999)

69% (1993)

61% (1997)

60% (2005)

58% (1981)

56% (1985)

60% (1980)