75% (1996)

37% (1983)

0% (1994)

70% (1998)

65% (1997)

70% (2006)

52% (2010)

70% (1995)

72% (1993)

85% (2006)

62% (2003)

50% (1979)

61% (1981)

60% (1971)

36% (2010)

63% (2005)

0% (1970)

65% (1987)

0% (2004)

66% (2013)