Within twenty years of the Norman conquest, the former Anglo-Saxon elite were replaced by a new class of Norman nobility, with around 8,000 Normans and French settling in England. The new earls (successors to the ealdermen), sheriffs and church seniors were all drawn from their ranks. In many areas of society there was continuity, as the Normans adopted many of the Anglo-Saxon governmental institutions, including the tax system, mints and the centralisation of law-making and some judicial matters; initially sheriffs and the hundred courts continued to function as before. The existing tax liabilities were captured in the Domesday Book, produced in 1086.