Facebook now has more than 950 million people using the service in a given month, 29 percent more than a year ago.

The company said 543 million of them accessed the service through a mobile device, a 67 percent increase.

Facebook also said it had a daily average of 552 million users in June, a 32 percent increase from a year ago.

Here is a look at how the number of active users at Facebook has grown:

1 million — End of 2004.

5.5 million — End of 2005.

12 million — End of 2006.

20 million — April 2007.

50 million — October 2007.

100 million — August 2008.

150 million — January 2009.

175 million — February 2009.

200 million — April 2009.

250 million — July 2009.

300 million — September 2009.

350 million — End of 2009.

400 million — February 2010.

500 million — July 2010.

608 million — End of 2010.

750 million — July 2011.

800 million — September 2011.

845 million — End of 2011.

901 million — March 2012.

955 million — June 2012.

Source: Facebook Inc.