59% (1980)

70% (1981)

63% (2007)

66% (1994)

64% (1970)

51% (1982)

20% (1991)

53% (1986)

59% (1991)

49% (1976)

46% (1980)

62% (1997)

67% (2006)

43% (1970)

53% (2005)

55% (1985)

63% (1979)

75% (1984)

50% (2017)

55% (1968)