50% (1974)

50% (1970)

46% (1991)

61% (2000)

50% (1976)

0% (1977)

100% (2006)

82% (1973)

90% (1994)

51% (1993)

40% (1977)

0% (1975)

50% (1992)

60% (1974)

55% (1978)

87% (2004)

0% (1975)

37% (1998)

10% (2006)

32% (1982)