50% (2001)

61% (1983)

53% (1985)

60% (2006)

60% (2002)

65% (1986)

62% (2005)

71% (2008)

53% (1995)

48% (1995)

60% (1991)

50% (1999)

60% (2011)

42% (1994)

0% (1981)

59% (1999)

52% (1994)

0% (1987)

65% (2002)

63% (1993)