63% (1982)

20% (2000)

57% (1981)

50% (2010)

64% (1988)

83% (2013)

88% (1996)

57% (2010)

53% (1992)

0% (1981)

50% (2005)

75% (1971)

0% (2006)

85% (1970)

0% (2003)

66% (1993)

43% (1964)

0% (1974)

68% (2009)

50% (2008)