1980-2000 NAMCS Public-Use Trend
File The NAMCS trend file was
originally planned to contain
common items of data from nine survey years between 1975-1996. The
trend file has now been restructured to include data from nine years
between 1980-2000. Data from 1975-76 were dropped for a variety of
reasons, one of which was the difficulties encountered with the inclusion
of codes from earlier classification systems. Work is in progress on
the new version and we hope to make it available as
soon as resources will allow.