>> ted egan, the comptroller's office. as they have been working on this issue, we have and try to contribute some analysis with regard to housing affects the economy in san francisco. in particular, however affects job creation. i just want to share some of the analysis that i have done. thank you. supervisor cohen? do we have a powerpoint? supervisor wiener: 4 sfgtv? >> yes, we do. looking at this in san francisco, this is a chart. the blue line over the past 40 years in contrast with the area as a whole, the red line, and this has been a fairly slow growing jobs center. we have added about 30,000 jobs in the 40 years between 1969 and 2009, and the rest of the bay area during the time added about 1.5 million jobs. now, one of the main reasons for that is that there is population growth in the rest of the bay area, and employment in the retail trade and services was needed to serve that population, but san francisco has also lost its share of an appointment in the bay area around a set of industries that are not tied to p