68% (1990)

74% (1998)

75% (2015)

64% (2020)

64% (2008)

77% (1993)

76% (1979)

77% (1994)

69% (2019)

80% (1986)

85% (2016)

65% (1997)

71% (2018)

64% (2001)

79% (1999)

70% (2013)

76% (2015)

85% (2014)

50% (1984)

64% (1992)