Number of employees at Google every quarter from 9/2004 to 9.2006	
Source:  http://blog.searchenginewatch.com/061026-091240 (Google Zorgloob 2006)	
period	employees
1	2688
2	3021
3	3482
4	4182
5	4989
6	5680
7	6790
8	7942
9	9378