63% (2006)

60% (2017)

54% (2013)

63% (2021)

70% (1983)

71% (1979)

56% (2012)

78% (1980)

64% (1971)

66% (1984)

67% (2004)

64% (1987)

69% (1987)

78% (1985)

61% (1995)

63% (1992)

61% (2010)

62% (1986)

68% (1988)

51% (2011)