50% (2008)

17% (1986)

44% (1999)

43% (1995)

45% (2005)

60% (1964)

55% (1978)

80% (1999)

53% (2015)

59% (2001)

54% (1997)

61% (2004)

61% (2009)

80% (1971)

78% (1981)

63% (1977)

60% (2007)

64% (2002)

60% (1992)

52% (2006)