The term pizza was first recorded in the 10th century in a Latin manuscript from the Southern Italian town of Gaeta in Lazio, on the border with Campania.[2] Raffaele Esposito is often considered to be the father of modern pizza.[3][4][5][6] Modern pizza was invented in Naples. In 2009, Neapolitan pizza was registered with the European Union as a Traditional Speciality Guaranteed dish. In 2017, the art of making Neapolitan pizza was added to UNESCO's list of intangible cultural heritage.[7] Pizza and its variants are among the most popular foods in the world. Pizza is sold at a variety of restaurants, including pizzerias (pizza specialty restaurants), Mediterranean restaurants, via delivery, and as street food.[8] In Italy, pizza served in a restaurant is presented unsliced, and is eaten with the use of a knife and fork.[9][10] In casual settings, however, it is cut into wedges to be eaten while held in the hand. Pizza is also sold in grocery stores in a variety of forms, including frozen or as kits for self-assembly. They are then cooked using a home oven. In 2017, the world pizza market was US$128 billion, and in the US it was $44 billion spread over 76,000 pizzerias.[11] Overall, 13% of the U.S. population aged two years and over consumed pizza on any given day.[12]