42% (2001)

72% (2005)

68% (1999)

65% (2006)

58% (1995)

66% (1999)

51% (1998)

62% (2001)

62% (2002)

61% (2002)

76% (2002)

67% (2002)

68% (2001)

61% (2000)

52% (2002)

62% (2003)

45% (2000)

55% (2001)

68% (1997)

61% (2002)