20% (1980)

17% (1986)

67% (1986)

57% (2005)

48% (1984)

54% (1988)

54% (2004)

53% (2011)

59% (1997)

35% (1971)

50% (2006)

20% (1994)

56% (1993)

62% (2018)

44% (2004)

35% (1999)

40% (2004)

45% (1999)

45% (1990)

0% (1989)