74% (1993)

83% (1997)

50% (2008)

62% (2004)

72% (2011)

82% (2002)

78% (2013)

100% (2005)

39% (2005)

68% (1989)

60% (1987)

100% (2004)

77% (2000)

10% (2007)

80% (2002)

60% (1998)

0% (1970)

58% (2002)

0% (2002)

45% (2019)