55% (1968)

0% (1996)

35% (2002)

40% (1996)

50% (1994)

59% (1994)

67% (1970)

18% (1970)

62% (1993)

24% (1989)

40% (1975)

55% (1969)

33% (1968)

54% (1974)

57% (1968)

47% (1970)

0% (1992)

40% (1960)

75% (1964)

80% (1967)