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:
Peter Robbins (actor)
Table title:
Filmography
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=2 > 1963 </td><td colspan=1 rowspan=1 > A Ticklish Affair </td><td colspan=1 rowspan=1 > Grover Martin </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > A Boy Named Charlie Brown </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=6 > 1964 </td><td colspan=1 rowspan=1 > Rawhide </td><td colspan=1 rowspan=1 > Mike </td><td colspan=1 rowspan=5 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > The Donna Reed Show </td><td colspan=1 rowspan=1 > Peewee </td></tr>
<tr> <td colspan=1 rowspan=1 > Vacation Playhouse </td><td colspan=1 rowspan=1 > Richard </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > The Munsters </td><td class="highlighted"  colspan=1 rowspan=1 > Elmer </td></tr>
<tr> <td colspan=1 rowspan=1 > The Farmer's Daughter </td><td colspan=1 rowspan=1 > Josh </td></tr>
<tr> <td colspan=1 rowspan=1 > The Joey Bishop Show </td><td colspan=1 rowspan=1 > Other Child </td><td colspan=1 rowspan=1 > also Peter </td></tr>
<tr> <td colspan=1 rowspan=2 > 1965 </td><td colspan=1 rowspan=1 > A Charlie Brown Christmas </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > Moment to Moment </td><td colspan=1 rowspan=1 > Timmy Stanton </td><td colspan=1 rowspan=2 >  </td></tr>
<tr> <td colspan=1 rowspan=5 > 1966 </td><td colspan=1 rowspan=1 > And Now Miguel </td><td colspan=1 rowspan=1 > Pedro </td></tr>
<tr> <td colspan=1 rowspan=1 > Charlie Brown's All Stars! </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > Love on a Rooftop </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > It's the Great Pumpkin, Charlie Brown </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > ABC Stage 67 </td><td colspan=1 rowspan=1 > Herbert </td><td colspan=1 rowspan=4 >  </td></tr>
<tr> <td colspan=1 rowspan=5 > 1967 </td><td colspan=1 rowspan=1 > The F.B.I. </td><td colspan=1 rowspan=1 > Jobie </td></tr>
<tr> <td colspan=1 rowspan=1 > F Troop </td><td colspan=1 rowspan=1 > Joey Walker </td></tr>
<tr> <td colspan=1 rowspan=1 > Good Times </td><td colspan=1 rowspan=1 > Brandon </td></tr>
<tr> <td colspan=1 rowspan=1 > You're in Love, Charlie Brown </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > Get Smart </td><td colspan=1 rowspan=1 > Dr. Tattledove </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1968 </td><td colspan=1 rowspan=1 > He's Your Dog, Charlie Brown </td><td colspan=1 rowspan=1 > Charlie Brown </td><td colspan=1 rowspan=1 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > 1968-1969 </td><td colspan=1 rowspan=1 > Blondie </td><td colspan=1 rowspan=1 > Alexander Bumstead </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 > 1969 </td><td colspan=1 rowspan=1 > It Was a Short Summer, Charlie Brown </td><td colspan=1 rowspan=2 > Charlie Brown </td><td colspan=1 rowspan=2 > Voice role </td></tr>
<tr> <td colspan=1 rowspan=1 > A Boy Named Charlie Brown </td></tr>
<tr> <td colspan=1 rowspan=1 > 1970 </td><td colspan=1 rowspan=1 > Bracken's World </td><td colspan=1 rowspan=1 > David </td><td colspan=1 rowspan=8 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1971 </td><td colspan=1 rowspan=1 > Dinah's Place </td><td colspan=1 rowspan=1 > Himself </td></tr>
<tr> <td colspan=1 rowspan=1 > 1972 </td><td colspan=1 rowspan=1 > My Three Sons </td><td colspan=1 rowspan=1 > Jeffreyy Fredericks </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > It's Your 20th Television Anniversary, Charlie Brown </td><td colspan=1 rowspan=5 > Himself </td></tr>
<tr> <td colspan=1 rowspan=1 > 1990 </td><td colspan=1 rowspan=1 > You Don't Look 40, Charlie Brown </td></tr>
<tr> <td colspan=1 rowspan=1 > 2001 </td><td colspan=1 rowspan=1 > The Making of "A Charlie Brown Christmas" </td></tr>
<tr> <td colspan=1 rowspan=2 > 2005 </td><td colspan=1 rowspan=1 > The Tonight Show with Jay Leno </td></tr>
<tr> <td colspan=1 rowspan=1 > TV Land's Top Ten </td></tr>
</table>
Question:
Who appeared as "Elmer" in The Munsters and when did they appear?
Answer:
Peter Robbins appeared as "Elmer" in The Munsters in 1964.