You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Szlachta

Context:
According to heraldic sources total number of legal ennoblements issued between the 14th century and the mid-18th century, is estimated at approximately 800. This is an average of only about two ennoblements per year or only 0.000 000 14 – 0.000 001 of historical population. Compare: historical demography of Poland.

Question:
What is average for ennoblements between 14th and min 18th century.

two ennoblements per year