60% (1994)

55% (1990)

61% (1998)

65% (1991)

58% (1986)

52% (1995)

58% (2007)

77% (2001)

60% (1999)

71% (1984)

57% (1987)

62% (1988)

65% (1990)

50% (1991)

57% (2014)

72% (1984)

54% (1998)

57% (1997)

63% (1985)

60% (1988)