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:
Black Dog (song)
Table title:
Accolades
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Publication </th><th colspan=1 rowspan=1 > Country </th><th colspan=1 rowspan=1 > Accolade </th><th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Rank </th></tr>
<tr> <td colspan=1 rowspan=1 > Classic Rock </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > "The Top Fifty Classic Rock Songs of All Time" </td><td colspan=1 rowspan=1 > 1995 </td><td colspan=1 rowspan=1 > 18 </td></tr>
<tr> <td colspan=1 rowspan=1 > The Guitar </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > "Riff of the Millennium" </td><td colspan=1 rowspan=1 > 1999 </td><td colspan=1 rowspan=1 > 7 </td></tr>
<tr> <td colspan=1 rowspan=1 > Q </td><td colspan=1 rowspan=1 > United Kingdom </td><td colspan=1 rowspan=1 > "1010 Songs You Must Own!" </td><td colspan=1 rowspan=1 > 2004 </td><td colspan=1 rowspan=1 > * </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Rolling Stone </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > "The 500 Greatest Songs of All Time" </td><td class="highlighted"  colspan=1 rowspan=1 > 2004 </td><td class="highlighted"  colspan=1 rowspan=1 > 294 </td></tr>
<tr> <td colspan=1 rowspan=1 > Blender </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > "The Greatest Songs Ever!" </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > * </td></tr>
<tr> <td colspan=1 rowspan=1 > Bruce Pollock </td><td colspan=1 rowspan=1 > United States </td><td colspan=1 rowspan=1 > "The 7,500 Most Important Songs of 1944–2000" </td><td colspan=1 rowspan=1 > 2005 </td><td colspan=1 rowspan=1 > * </td></tr>
<tr> <td colspan=1 rowspan=1 > Q </td><td colspan=1 rowspan=1 > United Kingdom </td><td colspan=1 rowspan=1 > "The 20 Greatest Guitar Tracks" </td><td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Rolling Stone </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > "The 500 Greatest Songs of All Time" </td><td class="highlighted"  colspan=1 rowspan=1 > 2010 </td><td class="highlighted"  colspan=1 rowspan=1 > 300 </td></tr>
</table>
Question:
How was Black Dog ranked by Rolling Stone?
Answer:
In 2004, the Black Dog (song) was first ranked number 294 on Rolling Stone's list of the 500 Greatest Songs of All Time before being ranked at number 300 in 2010.