56% (1988)

54% (2004)

65% (1986)

48% (1984)

62% (2018)

20% (1980)

64% (2002)

20% (1986)

39% (2004)

60% (1989)

46% (2006)

20% (1985)

60% (1997)

35% (1971)

46% (1969)

20% (1994)

45% (1990)

59% (1971)

57% (2005)

50% (2011)