How many paid vacation days

Hello Alan, Mister Micawber, Beeesneees, Mordant, Esl_Expert and other native English speakers,

  1. How many paid vacation days do you get per year?
  2. How many paid vacation days per year do you get?
  3. How many days of paid vacation do you get per year?
  4. How many days of paid vacation per year do you get?

Do these all sound natural to you?

They all sound fine to me.

Thank you, Mordant.