61% (2009)

65% (1993)

45% (2008)

59% (1997)

63% (2007)

77% (2011)

69% (2007)

69% (1993)

49% (2013)

48% (2007)

66% (2006)

54% (2008)

40% (2007)

52% (2010)

68% (2009)

52% (2008)

28% (1989)

60% (1992)

46% (2007)

54% (1996)