50% (1978)

0% (1963)

70% (2007)

70% (1968)

50% (1977)

68% (1971)

0% (2007)

70% (2005)

52% (1988)

67% (1984)

0% (1966)

0% (2000)

73% (1993)

50% (1982)

77% (1969)

64% (2006)

73% (1999)

62% (2006)

0% (2003)

0% (1970)