70% (1993)

0% (1997)

68% (1987)

47% (1998)

50% (2010)

0% (1992)

0% (1996)

70% (2010)

60% (2008)

80% (1986)

0% (1994)

65% (1984)

90% (1990)

0% (1986)

80% (1987)

0% (1998)

0% (1988)

0% (1987)

70% (1986)

42% (2002)