51% (1995)

67% (1990)

45% (1990)

41% (1994)

62% (1988)

57% (1993)

62% (1994)

45% (1995)

41% (1978)

54% (1995)

46% (1995)

65% (1991)

49% (1993)

49% (1994)

45% (1994)

48% (1994)

20% (1988)

47% (1995)

60% (1995)

80% (1996)