That's when a new manager appears subsequent to the beginning of the ten-year period; they'll put not only the new numbers in, but they'll take the history of the new manager and put that history into the database.
Influenced by the writings of Fernand Braudel and Immanuel Wallerstein (historians who helped establish a tradition of global comparative history), large numbersof Japanese intellectuals are beginning to realise that a global economic system existed in the areas around the Indian Ocean, the Arabic Sea, the South China Sea, and the East China Sea long before the westernisation of the world.