65% (2002)

44% (1999)

40% (1998)

75% (2013)

52% (1981)

53% (1981)

60% (1974)

80% (1999)

68% (2000)

67% (2003)

60% (1977)

80% (2008)

55% (1978)

15% (1986)

0% (1969)

62% (2001)

60% (2007)

82% (1967)

66% (2009)

57% (1994)