64% (1973)

53% (1990)

0% (1989)

47% (1993)

60% (1971)

80% (1978)

64% (1989)

57% (1988)

70% (1997)

0% (1973)

0% (1987)

0% (1972)

0% (1996)

48% (1992)

35% (1997)

70% (2002)

40% (2002)

62% (1989)

62% (2002)

72% (1972)