76% (2002)

68% (2004)

62% (2002)

61% (2008)

68% (2002)

66% (2006)

58% (1999)

52% (2001)

54% (2002)

64% (1998)

61% (1999)

63% (2007)

56% (1999)

64% (2000)

55% (2009)

61% (1999)

60% (2001)

61% (2001)

35% (2000)

42% (1999)