43% (1994)

51% (2003)

58% (1983)

66% (2009)

61% (1979)

58% (2007)

59% (1992)

60% (1998)

70% (2005)

52% (1994)

55% (1977)

0% (2003)

58% (2008)

55% (2000)

63% (1979)

61% (1984)

51% (1976)

60% (1981)

85% (1985)

67% (1976)