74% (2004)

49% (1989)

15% (1986)

0% (2006)

75% (1978)

80% (1999)

65% (1955)

40% (1992)

66% (2009)

56% (2011)

0% (2003)

0% (1998)

58% (2002)

0% (1991)

48% (1995)

60% (2006)

68% (1999)

72% (1994)

62% (2012)

0% (2011)