60% (1987)

63% (2009)

66% (2019)

45% (1993)

53% (1990)

62% (1995)

54% (1992)

55% (1991)

64% (1981)

65% (1986)

60% (1991)

52% (1986)

55% (1982)

71% (2010)

59% (2009)

56% (2016)

72% (1978)

58% (1989)

75% (2012)

64% (2011)