79% (1983)

68% (2009)

61% (1986)

70% (1983)

69% (1987)

54% (2013)

41% (2013)

58% (2016)

51% (2011)

61% (1995)

63% (1987)

61% (2010)

67% (1986)

59% (2002)

52% (1999)

61% (2007)

76% (1995)

56% (2016)

46% (1987)

58% (1999)