63% (1995)

64% (1997)

35% (1997)

52% (1991)

72% (2012)

42% (1999)

39% (1990)

44% (1995)

45% (1994)

45% (2000)

56% (1999)

50% (1998)

43% (1990)

53% (1993)

33% (1998)

70% (1997)

30% (1992)

24% (1991)

30% (1999)

67% (1987)