79% (2013)

71% (1998)

71% (1994)

53% (2017)

73% (1990)

52% (1999)

69% (2015)

61% (1986)

61% (2009)

68% (1991)

60% (1998)

72% (2013)

69% (1979)

64% (1976)

65% (1993)

44% (1993)

60% (1988)

60% (1990)

48% (2007)

68% (1991)