35% (1985)

0% (1994)

64% (2002)

58% (1986)

60% (1984)

55% (1997)

60% (1988)

53% (1985)

57% (1998)

50% (2000)

60% (1992)

85% (1990)

0% (1993)

57% (2000)

0% (1989)

40% (1987)

60% (1986)

40% (1986)

61% (1984)

42% (1988)