65% (1972)

50% (2005)

15% (1988)

0% (2006)

0% (1961)

47% (2011)

60% (1970)

40% (1992)

0% (1967)

0% (1994)

50% (2000)

61% (1978)

40% (2001)

0% (1995)

60% (1976)

50% (2004)

52% (2002)

33% (1980)

48% (1980)

90% (1987)