69% (2006)

60% (1996)

39% (2006)

58% (2008)

22% (2008)

53% (2002)

66% (2004)

53% (1998)

59% (2003)

61% (2004)

60% (2006)

71% (2003)

67% (2004)

62% (1999)

59% (2006)

58% (2000)

80% (2001)

76% (1997)

47% (1999)

0% (2005)