40% (1986)

0% (1997)

0% (1991)

50% (1974)

70% (1983)

60% (1969)

97% (1997)

55% (1986)

42% (1993)

60% (1977)

37% (1994)

0% (2006)

0% (2007)

0% (1995)

53% (1995)

90% (2004)

0% (1994)

62% (2000)

66% (2001)

100% (2003)