62% (2012)

65% (2018)

63% (1997)

78% (2008)

66% (1996)

54% (1984)

71% (2015)

63% (1976)

62% (1998)

53% (2000)

63% (1989)

69% (2001)

70% (1993)

70% (1990)

60% (2003)

48% (1997)

56% (1990)

0% (1992)

75% (2010)

53% (1990)