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:
Vonetta McGee
Table title:
Selected 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 > 1968 </td><td colspan=1 rowspan=1 > Faustina </td><td colspan=1 rowspan=1 > Faustina Ceccarelli </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > The Great Silence </td><td colspan=1 rowspan=1 > Pauline Middleton </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1969 </td><td colspan=1 rowspan=1 > The Lost Man </td><td colspan=1 rowspan=1 > Diane Lawrence </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1970 </td><td colspan=1 rowspan=1 > The Kremlin Letter </td><td colspan=1 rowspan=1 > The Negress </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=4 > 1972 </td><td colspan=1 rowspan=1 > The Big Bust Out </td><td colspan=1 rowspan=1 > Nada </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Melinda </td><td colspan=1 rowspan=1 > Melinda </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Blacula </td><td colspan=1 rowspan=1 > Tina Williams / Luva </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Hammer </td><td colspan=1 rowspan=1 > Lois </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=3 > 1973 </td><td colspan=1 rowspan=1 > The Norliss Tapes </td><td colspan=1 rowspan=1 > Mme. Jeckiel </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Shaft in Africa </td><td class="highlighted"  colspan=1 rowspan=1 > Aleme </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Detroit 9000 </td><td colspan=1 rowspan=1 > Roby Harris </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1974 </td><td colspan=1 rowspan=1 > Thomasine & Bushrod </td><td colspan=1 rowspan=1 > Thomasine </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1975 </td><td colspan=1 rowspan=1 > The Eiger Sanction </td><td colspan=1 rowspan=1 > Jemima Brown </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 > Brothers </td><td colspan=1 rowspan=1 > Paula Jones </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1977 </td><td colspan=1 rowspan=1 > Foxbat </td><td colspan=1 rowspan=1 > Toni Hill </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1978 </td><td colspan=1 rowspan=1 > Superdome </td><td colspan=1 rowspan=1 > Sonny </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1984 </td><td colspan=1 rowspan=1 > Repo Man </td><td colspan=1 rowspan=1 > Marlene </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > Hell Town </td><td colspan=1 rowspan=1 > Sister Indigo </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1990 </td><td colspan=1 rowspan=1 > To Sleep with Anger </td><td colspan=1 rowspan=1 > Pat </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1991 </td><td colspan=1 rowspan=1 > Brother Future </td><td colspan=1 rowspan=1 > Mortilla </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1998 </td><td colspan=1 rowspan=1 > Johnny B Good </td><td colspan=1 rowspan=1 > Lidia </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 2007 </td><td colspan=1 rowspan=1 > Black August </td><td colspan=1 rowspan=1 > Georgia Jackson </td><td colspan=1 rowspan=1 > (final film role) </td></tr>
</table>
Question:
What year did McGee play a as Aleme in shaft in Africa?
Answer:
In 1973, McGee played as Aleme in Shaft in Africa.