62% (1970)

72% (2013)

69% (1986)

0% (1994)

71% (1956)

71% (1978)

0% (2001)

0% (1985)

0% (1999)

60% (2004)

0% (1993)

40% (2005)

0% (2007)

0% (2010)

0% (1981)

0% (2000)

0% (1997)

0% (2015)

0% (2018)

100% (1994)