Spencer, Indiana
Demographics
Table:
Historical population

Census	Pop.	Note	%±

1850	335	—
1870	971	—
1880	1,655	70.4%
1890	1,868	12.9%
1900	2,026	8.5%
1910	2,150	6.1%
1920	2,066	−3.9%
1930	2,179	5.5%
1940	2,375	9.0%
1950	2,394	0.8%
1960	2,557	6.8%
1970	2,553	−0.2%
1980	2,732	7.0%
1990	2,609	−4.5%
2000	2,508	−3.9%
2010	2,217	−11.6%
2016 (est.)	2,271	[4]	2.4%
U.S. Decennial Census[13]

Referring to the table information on the 'Demographics' part of 'Spencer, Indiana', summarise the highlighted cells in a single sentence and return it as JSON: {"answer": "YOUR ANSWER"}.