50% (1976)

0% (1970)

0% (2005)

71% (2009)

79% (2002)

57% (1993)

86% (1996)

70% (2008)

82% (2010)

85% (2008)

68% (1980)

59% (1977)

60% (2014)

72% (2005)

60% (1985)

80% (2003)

70% (2018)

70% (2020)

68% (2013)

0% (2015)