67% (1973)

80% (1994)

72% (1984)

65% (1992)

0% (1997)

56% (1982)

71% (1978)

71% (2005)

30% (1998)

82% (2004)

50% (1972)

70% (2005)

70% (2000)

66% (2001)

62% (1996)

60% (2002)

68% (1973)

40% (1990)

64% (1980)

70% (1974)