-----------------------+-----------------------+-----------------------
From 1800 to 1810. | From 1810 to 1820. | From 1820 to 1830.
-------+-------+-------+-------+-------+-------+-------+-------+-------
Free | Slave | Total | Free | Slave | Total | Free | Slave | Total
-------+-------+-------+-------+-------+-------+-------+-------+-------
334 | 389.7 | 356 | | | | 66.4 | 100 | 81
-------+-------+-------+-------+-------+-------+-------+-------+-------