60% (1979)

55% (1979)

37% (1976)

47% (1996)

33% (2000)

70% (2001)

33% (2001)

56% (2001)

60% (1994)

40% (2002)

63% (1988)

40% (2000)

70% (1997)

60% (1978)

64% (2001)

0% (1979)

53% (1978)

40% (1969)

63% (1994)

47% (1999)