62% (2011)

64% (2010)

64% (2008)

56% (2004)

49% (2003)

66% (1997)

49% (2001)

48% (2011)

62% (1994)

48% (2004)

51% (2008)

78% (2001)

37% (2005)

53% (2003)

40% (1996)

72% (1999)

58% (2004)

57% (1996)

81% (2000)

50% (2000)