73% (1989)

0% (1998)

67% (1977)

50% (1978)

0% (2009)

63% (1987)

61% (1990)

58% (2008)

48% (2005)

57% (1985)

51% (1975)

54% (1988)

0% (1986)

72% (1994)

0% (1977)

50% (1978)

39% (2003)

72% (2008)

50% (1975)

70% (1989)