Can the data be examined in larger units than single years?
Using the time frame box in the query section, the user can specify periods of any duration, but only one period at a time. In the tables tab in both Estimates and Search the Database, one can choose to display a number of statistics about the slave trade in 5-year, 10-year, 25-year , 50-year, and 100-year periods. Click the desired period in the selection area for table rows. In custom graphs, choices for the x-axis variable include, under voyage dates, year of arrival of slaves by 5-year, 10-year, and 25-year periods.
