48% (1999)

63% (2002)

62% (1996)

90% (1995)

46% (1989)

67% (2003)

0% (1995)

0% (1990)

52% (2008)

53% (2000)

69% (2003)

52% (2009)

63% (2005)

62% (2001)

50% (2003)

49% (2005)

53% (2002)

38% (2005)

0% (1988)

55% (1989)