68% (2003)

63% (2010)

63% (1982)

68% (1983)

60% (1999)

61% (2013)

61% (1997)

43% (1987)

61% (1992)

57% (1992)

65% (1977)

48% (2004)

55% (1999)

60% (1990)

68% (1989)

55% (2018)

58% (1980)

61% (1991)

60% (1979)

66% (2014)