60% (1987)

73% (1989)

79% (1996)

71% (1986)

71% (1993)

62% (1997)

71% (2003)

62% (1990)

80% (1973)

66% (2019)

72% (2004)

59% (1979)

50% (1981)

56% (1987)

49% (1984)

20% (2000)

70% (2010)

60% (2000)

80% (1995)

60% (1983)