20% (1963)

50% (1993)

20% (1984)

20% (1998)

50% (1999)

20% (2001)

0% (1991)

60% (2015)

20% (2000)

35% (2002)

20% (1995)

20% (1993)

60% (2015)

20% (2017)

30% (2009)

40% (2004)

20% (1999)

50% (2001)

20% (2001)

86% (2003)