Kongiganak, Alaska
Demographics
Table:
Historical population

Census	Pop.	Note	%±

1970	190	—
1980	239	25.8%
1990	294	23.0%
2000	359	22.1%
2010	439	22.3%
U.S. Decennial Census[7]

Having looked at the data table for 'Kongiganak, Alaska' titled 'Demographics', draft a brief sentence that explains what the highlighted cells show and format it within the following JSON object {"answer": "YOUR ANSWER"}.