0% (1988)

0% (1989)

0% (1997)

0% (2003)

63% (2009)

52% (1996)

55% (2011)

52% (2013)

60% (2000)

0% (1988)

68% (1987)

80% (1995)

40% (2011)

70% (1975)

0% (1990)

50% (1988)

80% (1993)

80% (1990)

80% (1979)

50% (2010)