52% (2005)

56% (2006)

60% (2003)

58% (2005)

50% (1995)

64% (2004)

54% (2003)

62% (1988)

0% (1990)

0% (1999)

40% (1995)

43% (2003)

44% (2004)

49% (2001)

30% (1990)

58% (2002)

0% (2006)

0% (1990)

50% (2007)

60% (1994)