72% (2005)

42% (2001)

58% (1995)

65% (2006)

68% (1999)

62% (2001)

51% (1998)

76% (2002)

62% (2003)

68% (2001)

68% (1997)

45% (2000)

61% (2002)

66% (1999)

61% (2000)

52% (2002)

62% (2002)

67% (2005)

67% (2002)

56% (2001)