-------------------+---------+---------+---------+--------- Source | 1929 | 1931 | 1933 | 1934 -------------------+---------+---------+---------+--------- | Quantity in thousands of pounds -------------------+---------+---------+---------+--------- Germany | 21,931 | 17,444 | 20,797 | 22,219 Belgium | 2,531 | 253 | 4,970 | 7,314 United Kingdom | 8,096 | 11,339 | 15,704 | 6,968 Poland and Danzig | | | | 5,766 Canada | 1,488 | 331 | 223 | 1,073 Netherlands | 44 | 937 | 1,092 | 621 Czechoslovakia | | | | 2,984 U. S. S. R. | | | | 1,050 All other countries| 918 | 667 | | +---------+---------+---------+--------- Total | 35,007 | 30,971 | 42,786 | 47,995 +---------+---------+---------+--------- | Value +---------+---------+---------+--------- Germany |$382,078 |$170,463 |$242,501 |$326,607 Belgium | 48,508 | 2,506 | 57,243 | 90,424 United Kingdom | 124,427 | 123,890 | 135,853 | 78,968 Poland and Danzig | | | | 89,002 Canada | 23,344 | 3,808 | 2,729 | 18,703 Netherlands | 614 | 11,837 | 12,693 | 8,739 Czechoslovakia | | | | 44,371 U. S. S. R. | | | | 12,569 All other countries| 19,747 | 6,074 | | +---------+---------+---------+--------- Total | 598,718 | 318,578 | 451,019 | 669,383 +---------+---------+---------+--------- | Value per pound +---------+---------+---------+--------- Germany | $0.017 | $0.010 | $0.012 | $0.015 Belgium | .019 | .010 | .012 | .012 United Kingdom | .015 | .011 | .009 | .011 Poland and Danzig | | | | .015 Canada | .016 | .011 | .012 | .017 Netherlands | .014 | .013 | .012 | .014 Czechoslovakia | | | | .015 U. S. S. R. | | | | .012 All other countries| .022 | .009 | | +---------+---------+---------+--------- Average | .017 | .010 | .011 | .014 +---------+---------+---------+--------- | Percent of total quantity +---------+---------+---------+--------- Germany | 62.7 | 56.3 | 48.6 | 46.3 Belgium | 7.2 | .8 | 11.6 | 15.3 United Kingdom | 23.1 | 36.6 | 36.7 | 14.5