20% (1963)

20% (2006)

20% (2011)

35% (2002)

50% (1993)

0% (1991)

50% (2014)

20% (1993)

20% (1999)

86% (2003)

20% (2017)

60% (2015)

20% (1995)

90% (2007)

20% (2000)

50% (1999)

20% (1998)

10% (2006)

0% (2013)

72% (2009)