81% (1994)

74% (1998)

59% (1999)

73% (2006)

80% (1987)

59% (1994)

77% (1983)

67% (2003)

66% (2000)

85% (1984)

0% (1993)

40% (2005)

72% (1982)

70% (1980)

68% (1979)

67% (1992)

63% (1980)

68% (1996)

0% (1976)

0% (1976)