Some annual reports without letter of chairman - Why?

[Happy]

When I go to http://phx.corporate-ir.net/phoenix.zhtml?c=76556&p=irol-reports and download the annual reports of Davita from 2001-2013, the reports from 2003-2012 include a letter of the chairman but the reports of 2001-2002 and 2013 do not.

Is it because the listed 2013 report is in form 10-K and the more extensive annual report is not done yet so it will be added later?

If so, why are there no letters for the earliest years?

[coc]

Hi Tom:

 

I don't think Kent Thiry wrote a shareholder letter his first two years at Davita. But the 2013 report does include one. If you click "2013 Annual Report" on the link you provided, his letter starts on page 3.