ECONOMY: State data show SD job market weakens yet again : North County Times - Californian Cox said he expects sales taxes across the county to decline by 4 percent from a year ago. In the middle of San Diego County's last recession in the early 1990s, sales tax revenue fell by only 3.5 percent per year, he said. This will start effecting city, county, and state employees very soon. I have a friend that works for a city, that could get laid off any day now.