60% (1988)

70% (1987)

80% (1989)

62% (2001)

70% (2010)

47% (1998)

0% (1994)

50% (1997)

64% (2007)

0% (1988)

0% (1999)

70% (1982)

60% (2008)

0% (1992)

90% (1977)

60% (2002)

50% (2010)

0% (1980)

0% (1992)

0% (1994)