73% (1999)

63% (1989)

67% (1979)

71% (1960)

40% (1989)

72% (1972)

72% (2009)

66% (1993)

58% (1994)

70% (2000)

61% (1997)

61% (1982)

59% (1977)

50% (2004)

50% (2004)

42% (1996)

40% (2003)

50% (1994)

73% (2003)

73% (2000)