64% (2009)

72% (2001)

57% (1970)

65% (1996)

70% (1997)

75% (2011)

51% (1984)

55% (1981)

50% (2009)

59% (2005)

54% (1998)

56% (2020)

67% (1984)

40% (1986)

58% (1999)

66% (1987)

67% (2012)

60% (1980)

66% (1985)

70% (1985)