63% (1995)

64% (1997)

30% (1999)

50% (1998)

44% (1995)

40% (1990)

0% (1970)

45% (1994)

52% (1991)

72% (2012)

30% (1992)

53% (1993)

49% (1998)

42% (1999)

67% (1999)

42% (1992)

35% (1997)

45% (2000)

24% (1991)

43% (1990)