66% (1999)

68% (1986)

72% (1996)

68% (1988)

55% (1986)

61% (2008)

53% (1992)

62% (1992)

68% (1983)

64% (1981)

47% (1993)

44% (1992)

84% (1980)

58% (1997)

57% (1986)

60% (1988)

57% (1990)

75% (1995)

25% (1990)

64% (1991)