70% (1979)

64% (2011)

61% (1990)

59% (2019)

62% (2021)

61% (1975)

70% (1985)

61% (2002)

69% (1975)

71% (2014)

70% (1981)

57% (1984)

63% (1991)

65% (1995)

58% (1994)

65% (1986)

50% (1984)

64% (2015)

30% (2000)

82% (2024)