42% (1998)

60% (1975)

70% (1972)

69% (1975)

75% (1978)

44% (1983)

50% (1969)

64% (1975)

59% (1973)

63% (1990)

61% (1970)

43% (1997)

45% (2004)

66% (1985)

55% (1964)

62% (1970)

53% (1979)

55% (1979)

55% (1979)

47% (1997)