53% (2005)

79% (1999)

54% (2005)

59% (2005)

55% (2003)

56% (2002)

55% (2006)

50% (1995)

64% (2004)

44% (2004)

0% (1999)

60% (2003)

30% (1990)

0% (1990)

49% (2001)

32% (2003)

62% (1988)

0% (1990)

0% (2001)

0% (2006)