81% (1990)

68% (1997)

68% (2003)

78% (1997)

70% (2016)

78% (1987)

78% (2007)

70% (2004)

54% (1987)

87% (2002)

60% (1989)

56% (1987)

41% (1990)

57% (1989)

88% (2000)

0% (1988)

77% (2005)

68% (2005)

72% (2001)

74% (2009)