How many books in Polish were published in each century? How many titles, copies? How many of them could have been preserved? Of course, only approximate numbers are meant.

It is difficult to accurately determine how many books in Polish were published in each century, due to a lack of complete and comprehensive data. Nevertheless, it can be assumed that the number of published books significantly increased with the development of printing technology and the popularization of reading. In the 15th century, which was the period of Johannes Gutenberg's invention of the printing press, the first printed books were published in Poland. However, the number of titles and copies was very limited due to the still small number of printing presses and the high cost of production. In the 16th century, during the Polish Renaissance period, book publishing began to develop. New printing presses were established, such as the one in Krakow operated by Maciej Wirzbięta. It can be presumed that during this time dozens, and perhaps even hundreds of titles were published, especially since Poles began to publish their own works, not just translations from foreign languages. The 17th century was a period of intense development of Polish literature and printing. New printing presses were established, such as the one founded by Łazarz Andrzej Orzechowski in Zamość, which led to a systematic increase in the number of published books. It is estimated that during this century already hundreds, and perhaps even thousands of titles were published, mainly in the fields of religious, scientific, philosophical, and poetic literature. In the 18th century, the development of printing and literature continued. Book publishing became increasingly common, and the number of copies increased significantly. This period saw the emergence of the first periodicals, newspapers, and magazines, which also contributed to the growth of the number of publications. It can be presumed that in this century thousands of books in Polish were published, both domestically and abroad. The 19th century was a period of intense development of Polish culture, literature, and printing. Ideas of romanticism, positivism, and enlightenment coming from other countries contributed to the increase in the number of publications. Many publishing houses and literary magazines were established to meet the growing interest of readers in literature. Thousands of books were published during this century, both original works and translations. The 20th century was a period of very intense development of Polish printing. Hundreds of publishing houses were established, publishing books in various fields, from fiction to textbooks. With the development of printing technology, book production became more efficient and accessible to a wide range of readers. During this century, a large number of books were published in significant quantities, suggesting that the number of copies reached millions. Unfortunately, it is not possible to accurately determine how many of these published books have survived. Some of them were destroyed over time, and others may have been lost for various reasons. However, thanks to the efforts of libraries, archives, and book enthusiasts, many of them have been preserved and constitute an important cultural heritage of Poland.

Only publishers may know, and I don't know if they are the ones.