75% (2006)

73% (2014)

67% (1992)

58% (2015)

72% (2004)

55% (2004)

0% (2006)

50% (2004)

59% (2004)

52% (1991)

70% (2012)

48% (2012)

52% (1987)

61% (1992)

0% (2001)

0% (1995)

63% (2012)

60% (2012)

90% (1978)

0% (1976)