59% (2006)

62% (2003)

50% (2006)

60% (2001)

60% (2004)

62% (2001)

66% (1998)

62% (2002)

54% (2008)

65% (2002)

52% (2004)

65% (2002)

46% (2005)

65% (2007)

56% (2004)

72% (2001)

75% (2003)

51% (2000)

55% (2000)

61% (2000)