0% (1978)

31% (1988)

58% (2014)

41% (1984)

67% (2008)

60% (2006)

57% (2017)

59% (2011)

36% (1999)

67% (2006)

53% (1980)

54% (2011)

50% (1998)

58% (1992)

72% (1985)

59% (2004)

65% (2017)

66% (1980)

69% (1986)

64% (2017)