51% (1985)

70% (1982)

62% (1992)

46% (1990)

64% (2010)

60% (1990)

72% (2009)

43% (1993)

30% (1978)

59% (1983)

10% (1993)

60% (1997)

68% (1983)

47% (1976)

58% (1994)

66% (2015)

38% (1993)

87% (1990)

66% (1983)

58% (1990)