73% (1925)

63% (1999)

58% (2001)

61% (1999)

51% (2000)

54% (1990)

57% (1990)

54% (1989)

51% (2000)

56% (1991)

20% (1991)

30% (2001)

20% (1989)

30% (1990)

50% (1926)

68% (1998)

55% (1990)

46% (1989)

39% (1989)

45% (1999)