Should you expect the price of a bond ETF to go up over time?

Le post interroge sur l'évolution du prix d'un ETF obligataire dans le temps, en comparaison avec les actions et les marchés monétaires.

I know it can go up and down with interest rates and other factors, but what is the expected outcome? With stock you have the expectation that it rises over time given the risk premium. With money markets, you'd on't expect it stay the same over time, but you do expect yield.