70% (2015)

71% (2009)

60% (2024)

71% (2013)

67% (2003)

78% (1998)

77% (1988)

58% (2013)

74% (1995)

67% (1990)

61% (2006)

75% (2004)

62% (2010)

75% (2006)

69% (2007)

71% (1986)

71% (1977)

69% (1984)

49% (1976)

74% (1984)