63% (1968)

56% (1993)

53% (1960)

51% (1982)

64% (1993)

45% (2006)

20% (2002)

50% (1989)

45% (2013)

50% (1981)

61% (1975)

0% (1991)

55% (1956)

75% (1973)

50% (1985)

0% (1964)

0% (1964)

65% (2001)

71% (1998)

60% (1983)