77% (1995)

75% (1995)

63% (2003)

72% (1988)

70% (1999)

74% (1996)

72% (1990)

82% (1994)

68% (1999)

66% (2001)

64% (2009)

67% (1986)

66% (1991)

55% (1989)

74% (1987)

48% (1986)

60% (1990)

70% (1987)

0% (1991)

55% (2007)