69% (1998)

59% (2003)

19% (2007)

73% (2004)

62% (2005)

47% (2007)

63% (2004)

47% (2002)

50% (2006)

70% (1992)

57% (2003)

68% (2002)

52% (1997)

58% (2006)

66% (1999)

32% (2006)

62% (2005)

60% (2001)

60% (2000)

48% (1999)