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:
List of Prime Ministers of Mali
Table title:
List
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=2 > No. </th><th colspan=1 rowspan=2 > Prime Minister (Birth–Death) </th><th colspan=1 rowspan=2 > Portrait </th><th colspan=3 rowspan=1 > Tenure </th><th colspan=2 rowspan=2 > Political affiliation </th><th colspan=1 rowspan=2 > Head(s) of State </th></tr>
<tr> <th colspan=1 rowspan=1 > Took office </th><th colspan=1 rowspan=1 > Left office </th><th colspan=1 rowspan=1 > Time in office </th></tr>
<tr> <th colspan=1 rowspan=1 > 1 </th><th colspan=1 rowspan=1 > Modibo Keïta (1915–1977) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 20 June 1960 </td><td colspan=1 rowspan=1 > 1965 </td><td colspan=1 rowspan=1 > c. 5 years </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > US–RDA </td><td colspan=1 rowspan=1 > Himself </td></tr>
<tr> <td colspan=9 rowspan=1 > Post abolished (1965 – 19 November 1968) </td></tr>
<tr> <th colspan=1 rowspan=1 > 2 </th><th colspan=1 rowspan=1 > Yoro Diakité (1932–1973) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 19 November 1968 </td><td colspan=1 rowspan=1 > 18 September 1969 </td><td colspan=1 rowspan=1 > 303 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Military </td><td colspan=1 rowspan=1 > M. Traoré </td></tr>
<tr> <td colspan=9 rowspan=1 > Post abolished (18 September 1969 – 6 June 1986) </td></tr>
<tr> <th colspan=1 rowspan=1 > 3 </th><th colspan=1 rowspan=1 > Mamadou Dembelé (1934–2016) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 6 June 1986 </td><td colspan=1 rowspan=1 > 6 June 1988 </td><td colspan=1 rowspan=1 > 2 years, 0 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > UDPM </td><td colspan=1 rowspan=1 > M. Traoré </td></tr>
<tr> <td colspan=9 rowspan=1 > Post abolished (6 June 1988 – 2 April 1991) </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Soumana Sacko (1949–) </td><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 2 April 1991 </td><td colspan=1 rowspan=1 > 9 June 1992 </td><td colspan=1 rowspan=1 > 1 year, 68 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Touré </td></tr>
<tr> <th colspan=1 rowspan=1 > 5 </th><th colspan=1 rowspan=1 > Younoussi Touré (1941–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 9 June 1992 </td><td colspan=1 rowspan=1 > 12 April 1993 </td><td colspan=1 rowspan=1 > 307 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Konaré </td></tr>
<tr> <th colspan=1 rowspan=1 > 6 </th><th colspan=1 rowspan=1 > Abdoulaye Sékou Sow (1931–2013) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 12 April 1993 </td><td colspan=1 rowspan=1 > 4 February 1994 </td><td colspan=1 rowspan=1 > 298 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Konaré </td></tr>
<tr> <th colspan=1 rowspan=1 > 7 </th><th colspan=1 rowspan=1 > Ibrahim Boubacar Keïta (1945–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 4 February 1994 </td><td colspan=1 rowspan=1 > 15 February 2000 </td><td colspan=1 rowspan=1 > 6 years, 11 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > ADEMA–PASJ </td><td colspan=1 rowspan=1 > Konaré </td></tr>
<tr> <th colspan=1 rowspan=1 > 8 </th><th colspan=1 rowspan=1 > Mandé Sidibé (1940–2009) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 15 February 2000 </td><td colspan=1 rowspan=1 > 18 March 2002 </td><td colspan=1 rowspan=1 > 2 years, 31 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > ADEMA–PASJ </td><td colspan=1 rowspan=1 > Konaré </td></tr>
<tr> <th colspan=1 rowspan=1 > 9 </th><th colspan=1 rowspan=1 > Modibo Keita (1942–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 18 March 2002 </td><td colspan=1 rowspan=1 > 9 June 2002 </td><td colspan=1 rowspan=1 > 83 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Konaré </td></tr>
<tr> <th colspan=1 rowspan=1 > 10 </th><th colspan=1 rowspan=1 > Ahmed Mohamed ag Hamani (1942–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 9 June 2002 </td><td colspan=1 rowspan=1 > 29 April 2004 </td><td colspan=1 rowspan=1 > 1 year, 325 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Touré </td></tr>
<tr> <th colspan=1 rowspan=1 > 11 </th><th colspan=1 rowspan=1 > Ousmane Issoufi Maïga (1946–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 29 April 2004 </td><td colspan=1 rowspan=1 > 28 September 2007 </td><td colspan=1 rowspan=1 > 3 years, 152 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Touré </td></tr>
<tr> <th colspan=1 rowspan=1 > 12 </th><th colspan=1 rowspan=1 > Modibo Sidibé (1952–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 28 September 2007 </td><td colspan=1 rowspan=1 > 3 April 2011 </td><td colspan=1 rowspan=1 > 3 years, 187 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Touré </td></tr>
<tr> <th colspan=1 rowspan=1 > 13 </th><th colspan=1 rowspan=1 > Cissé Mariam Kaïdama Sidibé (1948–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 3 April 2011 </td><td colspan=1 rowspan=1 > 22 March 2012 (deposed.) </td><td colspan=1 rowspan=1 > 354 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > Touré </td></tr>
<tr> <td colspan=9 rowspan=1 > Vacant (22 March – 17 April 2012) </td></tr>
<tr> <td colspan=1 rowspan=1 > 14 </td><td class="highlighted"  colspan=1 rowspan=1 > Cheick Modibo Diarra (1952–) </td><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 17 April 2012 </td><td class="highlighted"  colspan=1 rowspan=1 > 11 December 2012 (resigned.) </td><td colspan=1 rowspan=1 > 238 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > D. Traoré </td></tr>
<tr> <td colspan=1 rowspan=1 > 15 </td><td class="highlighted"  colspan=1 rowspan=1 > Django Sissoko (1947/48–) </td><td colspan=1 rowspan=1 > - </td><td class="highlighted"  colspan=1 rowspan=1 > 11 December 2012 </td><td colspan=1 rowspan=1 > 5 September 2013 </td><td colspan=1 rowspan=1 > 268 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > D. Traoré </td></tr>
<tr> <th colspan=1 rowspan=1 > 16 </th><th colspan=1 rowspan=1 > Oumar Tatam Ly (1963–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 5 September 2013 </td><td colspan=1 rowspan=1 > 5 April 2014 </td><td colspan=1 rowspan=1 > 212 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
<tr> <th colspan=1 rowspan=1 > 17 </th><th colspan=1 rowspan=1 > Moussa Mara (1975–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 5 April 2014 </td><td colspan=1 rowspan=1 > 9 January 2015 </td><td colspan=1 rowspan=1 > 279 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
<tr> <th colspan=1 rowspan=1 > 18 </th><th colspan=1 rowspan=1 > Modibo Keita (1942–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 9 January 2015 </td><td colspan=1 rowspan=1 > 10 April 2017 </td><td colspan=1 rowspan=1 > 2 years, 91 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
<tr> <th colspan=1 rowspan=1 > 19 </th><th colspan=1 rowspan=1 > Abdoulaye Idrissa Maïga (1958–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 10 April 2017 </td><td colspan=1 rowspan=1 > 31 December 2017 (resigned.) </td><td colspan=1 rowspan=1 > 265 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > RPM </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
<tr> <th colspan=1 rowspan=1 > 20 </th><th colspan=1 rowspan=1 > Soumeylou Boubèye Maïga (1954–) </th><td colspan=1 rowspan=1 > - </td><td colspan=1 rowspan=1 > 31 December 2017 </td><td colspan=1 rowspan=1 > 18 April 2019 (lost confidence of Parliament.) </td><td colspan=1 rowspan=1 > 1 year, 108 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > ASMA-CFP </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
<tr> <td colspan=9 rowspan=1 > Vacant (18 April – 23 April 2019) </td></tr>
<tr> <th colspan=1 rowspan=1 > 21 </th><th colspan=1 rowspan=1 > Boubou Cisse (1974–) </th><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 23 April 2019 </td><td colspan=1 rowspan=1 > Incumbent </td><td colspan=1 rowspan=1 > 6 days </td><th colspan=1 rowspan=1 >  </th><td colspan=1 rowspan=1 > Independent </td><td colspan=1 rowspan=1 > I. B. Keïta </td></tr>
</table>
Question:
How long madibo spent in his office
Answer:
Sissoko was appointed as Prime Minister of Mali on 11 December 2012, following the resignation of his predecessor Cheick Modibo Diarra.