Abilene, Kansas
Demographics
Table:
Historical population

Census	Pop.	Note	%±

1880	2,360	—
1890	3,547	50.3%
1900	3,507	−1.1%
1910	4,118	17.4%
1920	4,895	18.9%
1930	5,658	15.6%
1940	5,671	0.2%
1950	5,775	1.8%
1960	6,746	16.8%
1970	6,661	−1.3%
1980	6,572	−1.3%
1990	6,242	−5.0%
2000	6,543	4.8%
2010	6,844	4.6%
2016 (est.)	6,469	[4]	−5.5%
U.S. Decennial Census

Studying the following table concerning the 'Demographics' part of 'Abilene, Kansas', summarise the highlighted cells in a single sentence and format it within the following JSON object {"answer": "YOUR ANSWER"}.