62% (1991)

50% (1978)

44% (1977)

45% (1980)

72% (1973)

56% (1985)

68% (1990)

69% (1987)

51% (2012)

68% (1989)

56% (1983)

68% (1977)

43% (1992)

71% (2009)

70% (2003)

67% (2020)

49% (1990)

61% (1998)

60% (2016)

68% (2017)