Early 20th century population growth coincided with lower-density suburban development. As the city expanded to the south and west, detached and semi-detached villas with large gardens replaced tenements as the predominant building style. Nonetheless, the 2001 census revealed that over 55% of Edinburgh's population were still living in tenements or blocks of flats, a figure in line with other Scottish cities, but much higher than other British cities, and even central London.[89]