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:
Cold Mailman
Table title:
Discography
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Released </th><th colspan=1 rowspan=1 > Record label </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > How To Escape Cause And Effect </td><td class="highlighted"  colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > Spoon Train Audio </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Relax; The Mountain Will Come To You </td><td class="highlighted"  colspan=1 rowspan=1 > 2010 </td><td colspan=1 rowspan=1 > Kråkesølv Recordings/Diger </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Heavy Hearts </td><td class="highlighted"  colspan=1 rowspan=1 > 2013 </td><td class="highlighted"  colspan=1 rowspan=1 > Beyond Records (Norway) </td></tr>
<tr> <td colspan=1 rowspan=1 > Everything Aflutter </td><td colspan=1 rowspan=1 > 2015 </td><td colspan=1 rowspan=1 > Spoon Train Audio </td></tr>
</table>
Question:
How often did Cold Mailman change record labels?
Answer:
The Cold Mailman band has released 4 albums on 3 different record labels between 2008 and 2015.