69% (2002)

55% (2016)

52% (2014)

61% (2011)

48% (1985)

63% (1985)

55% (1998)

56% (2001)

47% (2003)

56% (2014)

57% (2003)

70% (1967)

68% (1993)

56% (1996)

68% (1999)

66% (1996)

67% (2017)

53% (2007)

39% (2010)

82% (2013)