Luana, Iowa
Demographics
Table:
Historical populations
Year	Pop.	±%
1920	181	—
1930	186	+2.8%
1940	204	+9.7%
1950	220	+7.8%
1960	276	+25.5%
1970	225	−18.5%
1980	246	+9.3%
1990	190	−22.8%
2000	249	+31.1%
2010	269	+8.0%
1880	124	−53.9%
2016	280	+125.8%
Source:"American FactFinder". United States Census Bureau. and Iowa Data Center
Source: U.S. Decennial Census[8]

Having looked at the table information on 'Luana, Iowa', section 'Demographics', draft a brief sentence that explains what the highlighted cells show and provide it inside the JSON object {"answer": "YOUR ANSWER"}.