100% (1991)

100% (1992)

80% (2007)

90% (1979)

0% (1978)

85% (1995)

72% (1983)

40% (2007)

60% (1984)

84% (1997)

0% (1996)

65% (2002)

80% (1997)

75% (2003)

80% (1985)

72% (2003)

82% (1998)

77% (2001)

81% (1992)

0% (1976)