63% (1964)

68% (1995)

44% (1990)

61% (1996)

50% (1995)

37% (1990)

35% (1993)

60% (1993)

55% (1994)

60% (1986)

53% (1994)

53% (1991)

50% (1991)

54% (1995)

48% (1995)

10% (1993)

100% (1995)

45% (1984)

59% (1994)

60% (1990)