20% (1986)

40% (1998)

35% (2004)

45% (1992)

46% (1969)

52% (1988)

20% (1980)

62% (2018)

60% (1989)

45% (1999)

30% (1999)

57% (1965)

25% (2000)

35% (1999)

60% (1994)

57% (2005)

20% (1998)

50% (1994)

55% (1994)

30% (1993)