0% (1975)

0% (1984)

0% (1989)

80% (1985)

0% (1978)

50% (1980)

39% (2012)

0% (1990)

0% (1986)

0% (1992)

60% (1977)

0% (1980)

80% (1979)

70% (1980)

0% (1999)

90% (1977)

0% (2000)

0% (1997)

0% (1979)