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:
| Period | Civilians | Security forces | Insurgents | Total per period |
| --- | --- | --- | --- | --- |
| 1989–2001 | 1610.0 | 432.0 | 1007.0 | 3049.0 |
| 2002 | 382.0 | 100.0 | 141.0 | 623.0 |
| 2003 | 410.0 | 105.0 | 216.0 | 731.0 |
| 2004 | 466.0 | 100.0 | 87.0 | 653.0 |
| 2005 | 524.0 | 153.0 | 225.0 | 902.0 |
| 2006 | 521.0 | 157.0 | 274.0 | 952.0 |
| 2007 | 460.0 | 236.0 | 141.0 | 837.0 |
| 2008 | 399.0 | 221.0 | 214.0 | 834.0 |
| 2009 | 586.0 | 317.0 | 217.0 | 1120.0 |
| 2010 | 713.0 | 285.0 | 171.0 | 1169.0 |
| 2011 | 275.0 | 128.0 | 199.0 | 602.0 |
| 2012 | 146.0 | 104.0 | 117.0 | 367.0 |
| 2013 | 123.0 | 83.0 | 136.0 | 342.0 |
| TOTAL | 6615.0 | 2421.0 | 3145.0 | 12181.0 |
Question:
How many security forces?
Answer:
2421.0