very few because they had to make the choice and most of them i believe elected to go to cals telephonters at the tim. we had a few -- most of them long careers, at the time they had to make the election they wanted to stay with the stfers. >> the other piece they would add to that to to show what san francisco has done significantly is back here on page 2. in the contribution graph, we have that light blue line that shows normal interest on the u.a.l. and you have to contribute that much to pay for the benefits that are being earned and the interest on the unfunded so it's not expected to grow. there were a lot of plans that got into trouble because they were persistently contributing less than that, year after year after year. you can go below it on a temporary basis to try and get time to adjust your contributions but if you're persistently below that, it's likely that unfunded is going to grow and become a larger and larger burden. and to a certain extent that is what calpers ran into and has gotten them into their situation. they had a 30-year rolling ammortization period they were us