61% (1979)

55% (1992)

64% (1995)

50% (1989)

58% (2007)

51% (2003)

85% (1985)

67% (1976)

56% (1979)

59% (1992)

55% (2000)

70% (2005)

0% (2003)

58% (2002)

63% (1979)

67% (1979)

32% (1990)

43% (1994)

55% (1981)

61% (1984)