56% (2006)

52% (2005)

60% (2003)

50% (1995)

58% (2005)

0% (1990)

62% (1988)

64% (2004)

54% (2003)

49% (2001)

44% (2004)

58% (2002)

43% (2003)

0% (1990)

0% (1999)

0% (1990)

0% (2006)

60% (1994)

30% (1990)

40% (1995)