Table 1.--Salient soda ash statistics (Thousand metric tons and thousand dollars) --------------------------------------------------------------------------------------------------------------- 1970 1971 1972 1973 1974 1975 1976 --------------------------------------------------------------------------------------------------------------- United States: Production1/---------------------- 6,435 6,476 6,828 6,858 6,864 6,468 6,767 Value1/,e/---------------------- 149,165 151,418 167,702 191,712 256,260 300,886 370,712 Production, Wyoming trona--------- -- -- -- 5,643 6,610 7,101 8,462 Exports2/------------------------- 305 396 435 386 512 480 585 Value2/------------------------- 12,007 15,400 18,914 16,064 34,156 45,822 47,004 Imports for consumption----------- -- -- -- 9 29 2 (3/) Value--------------------------- -- -- -- 756 3,258 341 2 Stocks, Dec. 31, producers'------- 51 24 48 47 33 49 93 Consumption: Apparent4/---------------------- 6,137 6,107 6,369 6,482 6,395 5,974 6,138 Reported------------------------ NA NA NA NA NA NA NA World production------------------- 19,133 19,815 20,463 21,368 22,435 23,365 26,082 --------------------------------------------------------------------------- 1977 1978 1979 1980 1981 1982 1983 --------------------------------------------------------------------------- United States: Production1/---------------------- 7,292 7,521 7,487 7,507 7,513 7,093 7,681 Value1/,e/---------------------- 435,579 451,881 476,711 768,168 787,469 721,257 685,100 Production, Wyoming trona--------- 10,043 10,227 11,608 11,708 11,301 9,826 10,442 Exports2/------------------------- 689 707 904 992 953 1,006 1,484 Value2/------------------------- 52,943 61,454 86,663 121,945 121,107 140,616 154,584 Imports for consumption----------- 1 7 36 16 11 16 18 Value--------------------------- 145 734 4,292 2,389 1,625 2,410 2,704 Stocks, Dec. 31, producers'------- 92 69 62 121 239 294 279 Consumption: Apparent4/---------------------- 6,605 6,844 6,626 6,472 6,453 6,048 6,230 Reported------------------------ NA NA NA NA NA NA NA World production------------------- 26,443 27,210 28,188 28,346 28,014 26,807 27,892 --------------------------------------------------------------------------- 1984 1985 1986 1987 1988 1989 1990 --------------------------------------------------------------------------- United States: Production1/---------------------- 7,721 7,721 7,655 8,066 8,738 8,995 9,156 Value1/,e/---------------------- 611,000 622,253 553,517 593,685 644,973 764,146 836,188 Production, Wyoming trona--------- 10,618 10,726 12,008 12,582 13,713 14,774 14,665 Exports2/------------------------- 1,495 1,584 1,859 2,018 2,238 2,648 2,392 Value2/------------------------- 160,774 173,937 241,238 253,200 286,945 365,469 346,693 Imports for consumption----------- 15 51 96 136 121 129 146 Value--------------------------- 2,301 8,089 15,023 18,334 15,999 17,396 20,495 Stocks, Dec. 31, producers'------- 292 355 267 235 261 221 287 Consumption: Apparent4/---------------------- 6,228 6,125 5,980 6,216 6,595 6,516 6,844 Reported------------------------ NA NA NA 6,100 6,494 6,469 6,527 World production------------------- 29,234 29,142 29,823 30,659 31,645 32,560 32,565 --------------------------------------------------------------------------------------------------------------- e/Estimated. NA Not available. 1/Includes natural and synthetic. Natural only and soda liquors and mine water converted to soda ash equivalent in 1987 and thereafter: 63,469 metric tons in 1987; 73,365 metric tons in 1988; 95,027 metric tons in 1989; and 111,894 metric tons in 1990. 2/Export data for 1986-88 were adjusted by the U.S. Bureau of Mines to reconcile data discrepancies among the Bureau of the Census, the American Natural Soda Ash Corp, and Statistics Canada. 3/Less than 1/2 unit. 4/Defined as production minus exports plus imports plus or minus industry stock changes.