That link is as close as I have seen, but it doesn't say what it is for all three. I doubt it would be 42%*45%*49%=9%, using numbers from Oct 2013. I'd bet that most who pass one of the three their first time pass two.
There are stats on the NCEES site about first time pass rates, but there is nowhere (that I have found) that says what the first time pass rate is in CA, passing all three exams at the same time... Anyone have any idea?
Yes, they have posted results!
http://www2.dca.ca.gov/pls/wllpub/wllqryna$lcev2.startup?p_qte_code=ENG&p_qte_pgm_code=7500
And I passed all three! :)