50% (1978)

70% (1977)

98% (1994)

0% (1985)

30% (1987)

53% (2006)

35% (1979)

72% (1977)

50% (1983)

55% (1979)

60% (1985)

92% (2003)

0% (1997)

50% (1985)

0% (1970)

50% (1986)

0% (1970)

0% (1996)

60% (2007)

0% (2004)