62% (1995)

63% (1997)

39% (1990)

44% (1994)

72% (2012)

52% (1991)

67% (1987)

55% (1993)

67% (1999)

30% (1992)

30% (1991)

43% (1999)

42% (1992)

36% (1997)

70% (1997)

38% (1998)

30% (1999)

49% (1998)

50% (1995)

50% (1999)