68% (2018)

66% (1985)

67% (1997)

67% (1982)

51% (1995)

66% (2007)

55% (2016)

68% (1989)

59% (2007)

61% (1991)

63% (1997)

57% (2015)

72% (2005)

53% (2012)

61% (1986)

60% (1990)

54% (1997)

56% (2012)

55% (1988)

0% (1970)