68% (2005)

74% (1962)

80% (1999)

64% (1993)

63% (2015)

51% (2009)

53% (2014)

58% (1992)

75% (1964)

60% (2003)

54% (2015)

58% (2014)

56% (2005)

51% (1990)

44% (2004)

67% (2007)

61% (2005)

64% (1996)

72% (2007)

76% (2000)