50% (1976)

0% (1988)

67% (2013)

42% (1973)

50% (1976)

57% (1998)

50% (1984)

50% (1987)

50% (1983)

53% (2010)

0% (2012)

50% (2015)

0% (1980)

57% (1973)

0% (1969)