0% (1972)

20% (2005)

68% (1971)

50% (1970)

64% (2001)

0% (1978)

20% (1984)

32% (1982)

0% (1982)

30% (1971)

35% (1997)

70% (1997)

55% (1980)

0% (2000)

0% (2002)

40% (1978)

50% (1993)

50% (1980)

60% (1987)

70% (1978)