73% (2007)

80% (2009)

56% (2014)

53% (2008)

66% (2010)

73% (2001)

71% (1991)

75% (2014)

73% (1995)

59% (2009)

74% (2004)

66% (1997)

62% (2012)

69% (2014)

75% (1997)

49% (1996)

70% (2009)

55% (2011)

53% (2012)

66% (2014)