64% (1997)

63% (1995)

73% (2012)

40% (1990)

52% (1991)

45% (1994)

40% (1998)

47% (1995)

70% (1997)

50% (1999)

30% (1991)

50% (1999)

55% (1993)

68% (1987)

38% (1998)

0% (2004)

36% (1997)

45% (2000)

43% (1990)

67% (1999)