54% (1996)

66% (2004)

58% (1999)

54% (1995)

41% (2007)

64% (1996)

71% (1996)

56% (2001)

55% (2001)

58% (1989)

51% (2006)

50% (1998)

69% (1996)

30% (1997)

65% (1999)

56% (2002)

69% (2000)

50% (2001)

69% (1983)

66% (2003)