0% (2005)

60% (1993)

60% (1991)

0% (2000)

0% (1987)

50% (1973)

0% (1995)

50% (1985)

0% (1984)

40% (1995)

0% (1985)

72% (1984)

42% (1987)

70% (2007)

80% (1991)

58% (1987)

50% (1961)

50% (1988)

0% (1998)

59% (1993)