69% (2017)

40% (2008)

53% (2002)

60% (2014)

57% (1997)

53% (1991)

68% (2009)

66% (1993)

48% (2008)

67% (2000)

62% (2002)

70% (2006)

70% (2007)

72% (2017)

20% (1990)

64% (2000)

78% (1968)

59% (1974)

78% (2011)

49% (2018)