69% (2010)

70% (2002)

62% (2004)

66% (2009)

64% (2001)

64% (2009)

48% (1999)

58% (2002)

61% (2000)

55% (2000)

69% (2005)

64% (2006)

45% (2000)

71% (2002)

62% (1999)

53% (2009)

60% (2002)

40% (2003)

40% (2000)