Every day, public and private data-gathering agencies publish economic reports that are widely reported on by the business media.

GDP, manufacturing, and labor market data all help to inform us about what's going on in the economy – but there are other things we can look at to supplement our view.

Some of the more unusual ones we've come across include the Guns-to-Caviar Index, Tylenol usage, and the Mosquito Bite Indicator.