76% (1999)

42% (2006)

70% (2018)

79% (1964)

71% (1993)

45% (1983)

60% (1990)

62% (2011)

78% (1976)

61% (1964)

52% (1971)

74% (1968)

50% (2007)

0% (1964)

10% (2002)

51% (1993)

50% (1991)

60% (2018)

48% (2012)

64% (1968)