What suggests the number of nobles are not that high? Given the previous question, write a context that contains the answer. It can be 1 - 20 sentences. Context:
According to heraldic sources 1,600 is a total estimated number of all legal ennoblements throughout the history of Kingdom of Poland and Polish-Lithuanian Commonwealth from the 14th century onward (half of which were performed in the final years of the late 18th century).