66% (1971)

70% (1993)

40% (2002)

0% (1972)

40% (1977)

0% (1980)

40% (1978)

24% (1991)

55% (1994)

80% (1969)

40% (2005)

65% (1998)

0% (2006)

40% (1969)

60% (2000)

0% (2006)

30% (1977)

0% (1980)

38% (1991)

70% (1977)