I think I see the confusion; mrfeh's graph shows the gain if you bought Jan 1. I'm not sure that's a useful number. If you bought at the low of the year, that graph would show something like 7% return. It indicates to me that bond funds are not like bonds as much as they are like dividend stocks.
We were discussing annual returns. What other dates would one use besides 1/1 and 12/31?
Bond funds should be bought for their dividends. That's the whole point of a bond fund, not NAV gyrations.