A population model is defined by $\frac{dP}{dt} = 0.05P(1 - \frac{P}{500})$. If a constant harvesting rate $H$ is introduced such that $\frac{dP}{dt} = 0.05P(1 - \frac{P}{500}) - H$, what is the bifurcation value of $H$ at which the equilibrium points disappear?