61% (1991)

45% (1980)

60% (1991)

54% (1998)

45% (1994)

95% (1987)

48% (1997)

53% (1989)

71% (1998)

83% (1986)

0% (2008)

41% (1996)

42% (1994)

65% (1987)

10% (1993)

70% (1987)

0% (1995)

0% (1976)

57% (1988)

70% (1989)