61% (2011)

70% (2012)

100% (2017)

20% (2015)

61% (2009)

60% (2003)

68% (2015)

62% (2015)

63% (2007)

58% (2013)

44% (1990)

52% (2005)

74% (2003)

80% (1999)

54% (1981)

62% (2012)

66% (2015)

0% (1981)

0% (1973)

90% (2004)