Bereishis 47:26:
וישם אתה יוסף לחק עד היום הזה על אדמת מצרים לפרעה לחמש רק אדמת הכהנים לבדם לא היתה לפרעה.
Think about it. Egypt was devastated by the Plagues. The king and\or most of his servants drowned in the sea, while their families at home experienced fires. According to historians, Egypt didn’t regain its place as a regional power for centuries.
But the taxes didn’t change a bit.
See more here: How to Visualize Eternity