68% (1990)

76% (1967)

63% (2000)

69% (2001)

52% (1990)

59% (2005)

63% (2003)

62% (1991)

50% (2009)

56% (2000)

67% (1992)

41% (1992)

63% (2001)

58% (1991)

50% (1967)

58% (2007)

59% (2001)

55% (1966)

48% (1991)

50% (1991)