Table 2.--U.S. historical ammonium paratungstate statistics
                               (Metric tons tungsten content)
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                                                            Imports for
Year             Production          Consumption            consumption         Exports
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1970----------        NA                  NA                      NA               NA
1971----------        NA                  NA                      NA               26
1972----------        NA                  NA                      NA               43
1973----------     5,902               6,325                      NA              133
1974----------     6,671               7,136                      NA               28
1975----------     4,664               4,696                      NA               61
1976----------     5,810               7,222                      NA               85
1977----------     6,777               7,141                      NA               66
1978----------     7,286               7,971                     233               99
1979----------     8,055               8,491                     198                2
1980----------     7,664               8,430                     202                3
1981----------     8,855               9,165                     474                1
1982----------     4,914               5,873                     759                1
1983----------     5,021               5,655                     762                6
1984----------     8,326               8,474                   1,172                8
1985----------     6,777               7,413                   1,351               72
1986----------     5,604               6,475                   1,156                7
1987----------     5,336               6,363                   1,402              285
1988----------     7,183               8,323                     635              174
1989----------     7,831               8,493                     431              178
1990----------   1/6,142               8,787                     462              356
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  NA  Not available.
  1/Excludes 2 months of data withheld to avoid disclosing company proprietary data.