72% (1999)

10% (2003)

55% (1981)

68% (2002)

52% (1989)

63% (1979)

40% (2000)

54% (1995)

69% (1993)

66% (1991)

60% (1985)

45% (2003)

70% (1976)

50% (2013)

60% (1992)

65% (1990)

50% (1995)

59% (2014)

60% (2013)

60% (1984)