67% (1979)

80% (1972)

62% (1988)

70% (1972)

70% (1997)

57% (1978)

63% (1975)

0% (1980)

50% (1993)

63% (1972)

30% (1994)

47% (1999)

45% (2005)

38% (1999)

37% (2002)

49% (1995)

60% (1978)

55% (1973)

53% (1990)

66% (1971)