62% (2016)

59% (1986)

61% (2007)

66% (2001)

52% (1993)

50% (1993)

63% (1985)

56% (2004)

70% (1995)

60% (2003)

55% (1990)

70% (1988)

71% (1997)

68% (1993)

54% (1996)

73% (1983)

65% (2002)

60% (1991)

62% (1994)

76% (2004)