Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Club | Position in 2012–13 | First season in top division | Number of seasons in top division | First season of current spell in top division | Top division titles | Last top division title |
| --- | --- | --- | --- | --- | --- | --- |
| Biu Chun Rangers | 6th | 1965–66 | 35.0 | 2012–13 | 1.0 | 1970–71 |
| Citizen | 8th | 2004–05 | 9.0 | 2004–05 | 0.0 | N/A |
| Eastern Salon | 3rd, Second Division | 1936–37 | 59.0 | 2013–14 | 4.0 | 1994–95 |
| Happy Valley | 2nd, Second Division | 1959–60 | 48.0 | 2013–14 | 6.0 | 2005–06 |
| Kitchee | 2nd | 1947–48 | 35.0 | 2003–04 | 5.0 | 2011–12 |
| South China | 1st | 1918–19 | 93.0 | 1918–19 | 41.0 | 2012–13 |
| Southern | 4th | 2011–12 | 2.0 | 2012–13 | 0.0 | N/A |
| Sun Pegasus | 5th | 2008–09 | 6.0 | 2008–09 | 0.0 | N/A |
| Sunray Cave J.C. Sun Hei | 7th | 1994–95 | 20.0 | 1994–95 | 3.0 | 2004–05 |
| Tuen Mun | 3rd | 2010–11 | 4.0 | 2010–11 | 0.0 | N/A |
| Yokohama FC Hong Kong | 9th | 2012–13 | 2.0 | 2012–13 | 0.0 | N/A |
Question:
when did the club Citizen achieve its last top division title?
Answer:
N/A