60% (1977)

56% (2011)

0% (1998)

80% (1977)

80% (1980)

0% (1992)

0% (2004)

80% (1975)

0% (1998)

50% (1973)

0% (1997)

0% (1998)

0% (1997)

70% (1970)

0% (1990)

0% (1996)

0% (1997)