52% (1992)

70% (2008)

59% (1976)

57% (1994)

20% (1979)

42% (1999)

76% (1975)

70% (2008)

0% (1952)

0% (1994)

40% (1978)

53% (2002)

58% (1978)

36% (1978)

50% (1997)

45% (2009)

50% (1977)

75% (2011)

55% (1997)

35% (1986)