I found this on another site and it might be more useful
Canon has recently disclosed the Rated Shutter Life for all EOS models:

Model - Rated Shutter Life
Canon EOS Digital Rebel XS / 1000D - 100,000
Canon EOS Digital Rebel T1i / 500D - 100,000
Canon EOS Digital Rebel XSi / 450D - 100,000
Canon EOS Digital Rebel XTi / 400D - 50,000
Canon EOS Digital Rebel XT / 350D - 50,000
Canon EOS 50D - 100,000
Canon EOS 40D - 100,000
Canon EOS 30D - 100,000
Canon EOS 20D - 50,000
Canon EOS 5D Mark II - 150,000
Canon EOS 5D - 100,000
Canon EOS 1D Mark III - 300,000
Canon EOS 1D Mark II N - 200,000
Canon EOS 1DS Mark III - 300,000
Canon EOS 1DS Mark II - 200,000

Full list with links

I think with the first link I posted, the data for failure is valid as it is complete(ie that shutter has died), and indeed some shutters have died early. The data for the alive shutters is incomplete because they could keep running for much much longer.