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:
Chevrolet Corvette (C2)
Table title:
Production notes
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Production </th><th colspan=1 rowspan=1 > Base Price </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1963 </td><td colspan=1 rowspan=1 > 21,513 </td><td colspan=1 rowspan=1 > $4,037 </td><td colspan=1 rowspan=1 > New coupe body style introduced (only year for split rear window), coupe more expensive than convertible. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1964 </td><td colspan=1 rowspan=1 > 22,229 </td><td colspan=1 rowspan=1 > $4,037 </td><td colspan=1 rowspan=1 > Rear window of coupe changed to single pane; hood louvers deleted. </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1965 </td><td class="highlighted"  colspan=1 rowspan=1 > 23,562 </td><td colspan=1 rowspan=1 > $4,106 </td><td colspan=1 rowspan=1 > 396 in3 Big-Block V8 added; side-discharge exhaust introduced. Last year of fuel injection until 1982. </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1966 </td><td class="highlighted"  colspan=1 rowspan=1 > 27,720 </td><td colspan=1 rowspan=1 > $4,084 </td><td colspan=1 rowspan=1 > 427 in3 Big-Block V8 with unique bulging hood; 327 in3 300-horsepower small block V8 standard. </td></tr>
<tr> <td colspan=1 rowspan=1 > 1967 </td><td colspan=1 rowspan=1 > 22,940 </td><td colspan=1 rowspan=1 > $4,240 </td><td colspan=1 rowspan=1 > Five-louver fenders are unique; Big-Block hood bulge redesigned as a scoop; parking brake changed from pull-out under dash handle to lever mounted in center console; Solid lifter L88 427/430 would become most sought-after Corvette ever; only 20 were produced. </td></tr>
<tr> <th colspan=1 rowspan=1 > Total </th><th colspan=1 rowspan=1 > 117,964 </th><th colspan=1 rowspan=1 >  </th><th colspan=1 rowspan=1 >  </th></tr>
</table>
Question:
What happened to the production volume of the Chevrolet Corvette in 1966?
Answer:
In 1966 Chevrolet Corvette's volume rose to 27,720 units, up from 1965's sales.