55% (2007)

56% (1996)

40% (2002)

56% (1998)

44% (2004)

58% (2008)

65% (1998)

51% (2004)

35% (2011)

38% (1998)

56% (2000)

52% (2000)

59% (2005)

50% (2005)

35% (2004)

54% (2004)

64% (1997)

38% (2004)

62% (2006)

60% (1995)