58% (1988)

82% (1988)

62% (1998)

65% (1983)

60% (2007)

77% (2003)

51% (2004)

60% (1990)

80% (2005)

65% (1993)

76% (2005)

80% (2004)

70% (1974)

50% (1976)

66% (1991)

62% (1967)

65% (2006)

72% (1989)

60% (1987)

100% (1996)