70% (1979)

52% (1991)

55% (1992)

51% (1989)

61% (1983)

70% (1989)

72% (1989)

51% (1990)

54% (2004)

52% (2015)

76% (1997)

56% (2014)

59% (2009)

48% (2007)

50% (1995)

48% (1984)

73% (1987)

74% (2021)

45% (2003)

70% (1983)