39% (1990)

63% (1995)

64% (1997)

52% (1991)

73% (2012)

44% (1994)

55% (1993)

0% (1978)

67% (1987)

30% (1991)

43% (1999)

49% (1998)

30% (1992)

30% (1999)

45% (2000)

50% (1995)

70% (1997)

36% (1997)

0% (1987)

50% (1999)