85% (1993)

71% (1994)

53% (1981)

10% (2000)

0% (2007)

57% (2008)

0% (1999)

41% (2009)

65% (1992)

61% (1985)

72% (1982)

0% (1987)

60% (1971)

0% (2004)

0% (1997)

50% (1988)

61% (2009)

62% (1983)

0% (2013)

100% (1980)