77% (1997)

75% (1999)

64% (1970)

68% (2003)

52% (1999)

62% (2008)

0% (2000)

55% (2008)

50% (2005)

80% (2003)

30% (2005)

50% (2000)

72% (1970)

60% (2007)

30% (1970)

78% (2001)

20% (1998)

76% (1999)

68% (2005)

28% (2009)