58% (1996)

50% (1997)

64% (1995)

65% (1985)

56% (1991)

50% (2001)

80% (1984)

0% (1985)

49% (1999)

46% (1990)

60% (1997)

48% (1997)

70% (1997)

56% (1989)

42% (1994)

70% (1973)

10% (1994)

100% (2000)

80% (1980)

47% (1997)