60% (1989)

68% (2009)

60% (1997)

61% (2003)

52% (2009)

38% (2007)

54% (1987)

74% (2007)

61% (2006)

55% (1994)

50% (1994)

70% (2007)

65% (1992)

60% (2006)

53% (2007)

51% (2010)

68% (2011)

0% (1995)

68% (2007)

79% (2011)