50% (1985)

47% (1990)

50% (1986)

0% (1972)

50% (2006)

0% (1995)

73% (1974)

30% (2008)

0% (1996)

61% (1984)

60% (1972)

60% (1974)

72% (1994)

50% (1997)

60% (1993)

0% (1985)

0% (1983)

0% (1968)

0% (1965)

55% (1982)