63% (1990)

52% (1988)

50% (2002)

67% (2002)

60% (1979)

58% (1984)

0% (1979)

0% (1969)

50% (1993)

65% (2006)

65% (1986)

70% (2002)

68% (1993)

40% (1998)

0% (1982)

55% (1985)

73% (2003)

0% (1979)

54% (1999)

40% (1990)