Peterborough, Ontario
Demographics
Table:
Historical populations
Year	Pop.	±%
1841	2,000	—
1851	2,191	+9.5%
1871	4,611	+110.5%
1881	6,812	+47.7%
1891	9,717	+42.6%
1901	11,239	+15.7%
1911	18,360	+63.4%
1921	20,994	+14.3%
1931	22,372	+6.6%
1941	24,977	+11.6%
1951	38,272	+53.2%
1961	47,185	+23.3%
1971	58,111	+23.2%
1981	60,620	+4.3%
1991	68,371	+12.8%
1996	69,742	+2.0%
2001	71,446	+2.4%
2006	74,898	+4.8%
2011	78,698	+5.1%
2016	81,032	+3.0%

From the data table for 'Peterborough, Ontario' titled 'Demographics', compose one sentence describing only the highlighted cells and provide it inside the JSON object {"answer": "YOUR ANSWER"}.