Some oracles watch the sale of socks and underwear as their gauge for the health of the economy. I started watching ketchup in '08 and '09 when fast food places weren't automatically throwing in a couple of packets with my meals. I understood there was belt-tightening so I asked for them. Then gradually the employees started asking if I wanted ketchup, then they started slinging gratuitous packets again.
Maybe for the last month, but definitely for the last couple of weeks, they've been going dry on me again.