66% (2005)

55% (2006)

90% (1997)

50% (1997)

75% (2001)

65% (2016)

46% (2013)

0% (1977)

0% (1996)

70% (1979)

83% (1985)

90% (1981)

68% (2008)

57% (2009)

72% (1975)

55% (1988)

60% (1994)

82% (1984)

84% (2018)

53% (1995)