34% (1978)

63% (1993)

60% (1985)

52% (1987)

63% (1986)

59% (1983)

56% (1997)

62% (2001)

64% (1986)

61% (1999)

60% (2006)

73% (1992)

65% (1992)

58% (1987)

65% (2024)

73% (1991)

66% (1992)

67% (1991)

55% (2002)

67% (1992)