Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Mercedes-Benz OM621 engine
Table title:
Models
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Engine </th><th colspan=1 rowspan=1 > Displacement </th><th colspan=1 rowspan=1 > Power </th><th colspan=1 rowspan=1 > Torque </th><th colspan=1 rowspan=1 > Years </th></tr>
<tr> <td colspan=1 rowspan=1 > OM621 I </td><td colspan=1 rowspan=1 > 1.9 L (1,897 cc) </td><td colspan=1 rowspan=1 > 37 kW (50 hp) @ 4,000 rpm </td><td colspan=1 rowspan=2 > 108 N⋅m (80 lb⋅ft) @ 2,200 rpm </td><td colspan=1 rowspan=1 > 1958–1959 </td></tr>
<tr> <td colspan=1 rowspan=1 > OM621 IV </td><td colspan=1 rowspan=2 > 2.0 L (1,988 cc) </td><td colspan=1 rowspan=1 > 35 kW (47 hp) @ 3,800 rpm </td><td colspan=1 rowspan=1 > 1961–1962 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > OM621 III / VIII </td><td colspan=1 rowspan=1 > 40 kW (54 hp) @ 4,200 rpm </td><td colspan=1 rowspan=2 > 118 N⋅m (87 lb⋅ft) @ 2,400 rpm </td><td colspan=1 rowspan=1 > 1961–1968 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2.2 L (2,197 cc) </td><td colspan=1 rowspan=1 > 40 kW (54 hp) @ 3,000 rpm </td><td class="highlighted"  colspan=1 rowspan=1 > 1966–1988 </td></tr>
</table>
Question:
What displacement version of the OM621 III / VIII engine began being used in 1966, and what year did it stop being used?
Answer:
A 2.2 L (2,197 cc) version of the OM621 engine was used until 1988.