There is a Roman Catholic cathedral in the city. Since 1916, Cardiff has been the seat of a Catholic archbishop, but there appears to have been a fall in the estimated Catholic population, with estimated numbers in 2006 being around 25,000 fewer than in 1980. Likewise, the Jewish population of the city also appears to have fallen – there are two synagogues in Cardiff, one in Cyncoed and one in Moira Terrace, as opposed to seven at the turn of the 20th century. There are a significant number of nonconformist chapels, an early 20th century Greek Orthodox church and 11 mosques. In the 2001 census, 66.9% of Cardiff's population described itself as Christian, a percentage point below the Welsh and UK averages.