----+-------------------+--------------------------------------- | Quantity | Value +---------+---------+-------------------+------------------- Year| | | To all countries | To United States | To all |To United+--------+----------+--------+---------- |countries| States | Pounds |Dollars[1]| Pounds |Dollars[1] | | |sterling| |sterling| ----+---------+---------+--------+----------+--------+---------- | _1,000 | _1,000 | | | | | pounds_| pounds_| | | | 1928| 5,132| ([2]) | 20,607| 100,278| ([2]) | ([2]) 1929| 9,185| 4,312| 32,348| 157,110| 12,558| 60,993 1932| 11,132| 7,514| 26,869| 94,205| 14,274| 50,046 1933| 14,718| 10,480| 38,172| 161,728| 19,604| 83,059 1934| 11,955| 6,492| 35,226| 177,514| 13,025| 65,637 1935| 14,490| 7,999| 49,939| 244,789| 18,413| 90,256 1936| 26,332| 13,412| 120,372| 598,357| 46,158| 229,447 ----+---------+---------+--------+----------+--------+---------- [1] Conversion to dollars at annual average quotations of the Federal Reserve Board. [2] Not available. Source: The Trade of the United Kingdom, 1929 and 1936. _Belgium._—The distillation of coal tar is one of the oldest and most important branches of the Belgian chemical industry. Approximately 90 batteries of byproduct-coke ovens, with a total of 3,000 ovens are in operation. Practically all of the coal tar produced in these operations is distilled for the recovery of the several products. The output of naphthalene is shown in table 39. TABLE 39.—_Naphthalene: Belgian production, 1928-35_ -------+-------------- Year | Quantity -------+-------------- |_1,000 pounds_ 1928 | 26,000 1929 | 26,500 1930 | 24,200 1931 | 22,000 1933 | 12,000 1935[1]| 25,000 -------+------------ [1] Estimated. Source: Consular reports. Belgian imports and exports of naphthalene, by countries, are shown in tables 93 and 94 (see pp. 146, 147). Belgium is a net importer of crude naphthalene and a net exporter of refined naphthalene. In 1937, it imported 9 million pounds and exported 6.7 million of crude; it imported only 19 thousand pounds and exported 14 million pounds of refined. _Czechoslovakia._—The annual output of naphthalene in Czechoslovakia is shown in table 40. TABLE 40.—_Naphthalene: Czechoslovak production, in specified years, 1928-35_ ----+-------------- Year| Quantity ----+-------------- |_1,000 pounds_ 1928| 5,733 1930| 6,174 1931| 2,205 1932| 1,543 1933| 6,835 1934| 9,040 1935| 10,805 ----+------------- Source: Consular reports.