The Church of Scotland traces its roots back to the beginnings of Christianity in Scotland, but its identity is principally shaped by the Reformation of 1560. According to the Church of Scotland, in 2013 its membership was 398,389, or about 7.5% of the total population, dropping to 380,164 by 2014, and 325,695 by 2018, representing about 6% of the Scottish population. According to the 2018 Household Survey, 22% of the Scottish population in 2018 (down from 34% in 2009) reported belonging to the Church of Scotland.