70% (1970)

64% (1993)

66% (2010)

55% (1999)

78% (1989)

63% (1992)

68% (1969)

63% (1994)

61% (1965)

46% (2010)

52% (2012)

66% (1969)

64% (1969)

64% (1991)

52% (2011)

20% (1998)

54% (1999)

58% (1996)

57% (1966)

37% (1969)