67% (2015)

49% (2012)

64% (2008)

66% (1997)

67% (2014)

60% (2000)

72% (2015)

62% (2015)

78% (2004)

64% (2011)

61% (1997)

65% (2001)

54% (2009)

59% (2002)

68% (2005)

60% (2016)

59% (2013)

40% (2006)

75% (1997)

64% (2005)