71% (1971)

63% (2006)

20% (2013)

55% (1992)

69% (2007)

47% (1997)

61% (1986)

84% (1999)

77% (2016)

53% (2002)

57% (2003)

75% (1984)

85% (2014)

68% (1999)

68% (1984)

58% (2005)

78% (2013)

60% (1997)

55% (2003)

55% (2015)