This might give you what you need.
Inflation-indexed bond - Wikipedia, the free encyclopedia
People have been buying the TIPS for the past 4ish years and earning next to nothing as they thought inflation was about to take off. Well here we are 4 years later and they are still waiting. My question is why not wait until inflation starts to jump way up and then buy them? That seems to make more sense that buying them when inflation is low and then waiting for it to go up.