Year City population Urban population Metro population 1833 4,000[23] – – 1870 44,500[23] – – 1896 123,000[23] – 1921 (Pre-Population exchange) 473,000[23] – – 1921 (Post-Population exchange) 718,000[23] – – 1971 867,023[37] – – 1981 885,737 – – 1991 772,072 – 3,444,358[38] 2001 745,514[39] 3,130,841[39] 3,761,810[39]