Can someone help me understand this bond fund's performance? (VWEHX)

[thefed]

https://personal.vanguard.com/us/Fun...FundIntExt=INT


How do they calculate the average annual returns on something like this that pays dividends monthly? Do they include those dividends, or only base it on share price?

I now understand that it makes sense to hold something like this in an IRA, specifically a ROTH. But I dont understand how well it is actually doing...because I cant seem to figure out how these annual returns are figured.


Thanks!