64% (1997)

62% (1995)

52% (1991)

42% (1992)

55% (1993)

70% (1997)

39% (1990)

36% (1997)

43% (1990)

43% (1999)

50% (1995)

40% (1998)

72% (2012)

67% (1999)

30% (1991)

44% (1994)

56% (1999)

30% (1999)

50% (1999)

30% (1992)