70% (1998)

35% (2000)

68% (2000)

28% (2008)

38% (2002)

35% (2003)

40% (2006)

40% (2002)

58% (1996)

56% (1998)

45% (2000)

59% (2002)

60% (2006)

62% (2000)

44% (2004)

56% (2007)

40% (2001)

52% (2005)

46% (1997)

54% (2000)