72% (1994)

53% (1981)

0% (2004)

0% (2007)

85% (1993)

41% (2009)

73% (1982)

60% (1971)

10% (2000)

57% (2008)

61% (2009)

62% (1985)

50% (1988)

0% (1987)

0% (1999)

65% (1992)

0% (1997)

56% (2013)

0% (2013)

62% (1983)