81% (1994)

59% (1999)

73% (2006)

74% (1998)

80% (1987)

77% (1983)

59% (1994)

66% (2000)

67% (2003)

40% (2014)

85% (1984)

0% (1993)

72% (1982)

57% (1957)

68% (1996)

60% (1987)

0% (1976)

40% (2005)

69% (1964)

70% (1989)