MAP20210023200 Top 200 U.S property/casualty writers- 2021 edition. — Oldwick, N.J : A.M Best Company, 2021 Sumario: Industry's 2020 net premiums written increased 2.5% 1. Grupos aseguradores . 2. Seguro de daños patrimoniales . 3. Ranking . 4. Primas . 5. Estados Unidos . I. Best Company . II. Title.