-------+---------+-----------+---------- Year | Quantity| Value |Unit value -------+---------+-----------+---------- | | |_Cents per_ |_Pounds_ | | _pound_ 1919 |3,963,392| $1,190,984| 30.0 1920 |1,742,708| 429,116| 24.6 1923 |1,767,407| 318,765| 18.0 1924 |1,415,882| 237,639| 16.8 1925 |1,367,191| 282,078| 20.6 1926 | 767,698| 192,220| 25.0 1927 | 693,144| 143,700| 20.7 1928 |2,051,937| 259,100| 12.6 1929 |1,373,605| 197,986| 14.4 1930 | 607,690| 102,892| 16.9 1931 | 328,143| 48,095| 14.7 1932 | 260,339| 28,609| 11.0 1933 | ([1]) | ([1]) | 1934 | ([1]) | ([1]) | 1935 |3,353,625| 450,248| 13.4 1936 |1,146,026| 182,592| 15.9 1937[2]|1,375,036| 338,148| 24.6 -------+---------+-----------+---------- [1] Not reported separately. [2] Preliminary. Source: Foreign Commerce and Navigation of the United States. Competitive conditions. Glycerin occurs in chemical combination in animal and vegetable oils and fats. Since it is obtained as a byproduct, the output is dependent primarily upon the output of the major products, soaps and fatty acids, and its production is largely independent of demand. At low prices, however, less glycerin is recovered. The United States usually consumes more glycerin than it produces (see table 55), whereas leading European producing nations produce more than they consume. In recent years the domestic production has apparently been approaching domestic requirements. A factor tending to decrease demand is the increasing resort to substitutes in various uses, particularly ethylene glycol, ethyl alcohol, and methyl alcohol. On the other hand, the demand in the resin industry is expanding rapidly. TABLE 55.—_Refined glycerin: United States production, imports, exports, and apparent consumption, in specified years_ -------+-------------+----------+----------+-------------- Year |Production[1]|Imports[2]|Exports[3]| Apparent | | | |consumption[4] -------+-------------+----------+----------+-------------- | _Pounds_ | _Pounds_ | _Pounds_ | _Pounds_ 1927 | 108,392| 8,289| 693| 115,987 1929 | 125,772| 5,358| 1,374| 129,757 1931 | 113,894| 1,966| 328| 115,531 1932 | 105,163| 2,348| 260| 107,250 1933 | 104,120| 2,776| ([5]) | 106,895 1934 | 128,912| 2,214| ([5]) | 131,126 1935 | 123,390| 69| 3,354| 120,105 1936 | 132,922| 3,447| 1,146| 135,223 1937[6]| ([5]) | 7,535| 1,375| ([5]) -------+-------------+----------+----------+-------------- [1] From table 48 (refined basis).