0% (1978)

70% (1993)

33% (2000)

40% (1969)

30% (1971)

37% (1998)

55% (1980)

0% (1994)

53% (1978)

0% (1994)

70% (1978)

60% (1960)

50% (1993)

55% (1994)

50% (1994)

57% (1999)

33% (2001)

0% (2002)

0% (1996)

30% (1981)