Sales tax went down so much in 2001, because of 9/11. Our former city manager said that 45% of Chula Vista’s sales tax revenue came from purchases by people from Tijuana and problems crossing the border ended that flow. It may be dipping now because people are simply not buying as much because of fears of losing their homes. Chula Vistans need to try to buy things in Chula Vista to help finance services.