42% (1998)

60% (1996)

46% (1994)

38% (1994)

0% (1991)

42% (1995)

55% (2000)

40% (1998)

69% (1987)

50% (1995)

52% (2001)

32% (1995)

40% (1995)

40% (1993)

55% (1999)

50% (2001)

63% (1996)

63% (1992)

40% (2000)

51% (1990)