40% (1996)

70% (1988)

60% (1993)

100% (1997)

85% (1986)

56% (1993)

0% (1990)

0% (1994)

51% (1995)

0% (1995)

0% (1991)

0% (1976)

59% (2002)

55% (1993)

30% (1995)

57% (1988)

58% (1997)

78% (1986)

65% (2000)

0% (1987)