75% (1989)

69% (2007)

73% (2002)

64% (2008)

69% (1989)

70% (1990)

63% (1996)

71% (1988)

69% (1993)

73% (1987)

67% (1993)

52% (2003)

72% (1992)

66% (2006)

60% (1990)

77% (1999)

0% (1994)

68% (1983)

66% (2005)

62% (1998)