Roff, Oklahoma
Demographics
Table:
Historical population

Census	Pop.	Note	%±

1910	1,044	—
1920	1,138	9.0%
1930	772	−32.2%
1940	705	−8.7%
1950	623	−11.6%
1960	638	2.4%
1970	632	−0.9%
1980	729	15.3%
1990	717	−1.6%
2000	734	2.4%
2010	725	−1.2%
2015 (est.)	720	[4]	−0.7%
U.S. Decennial Census[5]

With reference to the table that covers 'Roff, Oklahoma', section 'Demographics', create one factual sentence about the highlighted cells, without adding extra data and provide it inside the JSON object {"answer": "YOUR ANSWER"}.