74% (1995)

20% (2015)

0% (2000)

20% (2017)

0% (2007)

30% (2016)

55% (2007)

20% (1997)

20% (1993)

15% (2000)

0% (1995)

20% (1988)

35% (1989)

20% (1997)

64% (1988)

80% (2015)

40% (1989)

35% (2004)

0% (1997)

23% (2006)