Table:
Historical population

Census	Pop.	Note	%±

1920	170	—
1930	206	21.2%
1940	222	7.8%
1950	198	−10.8%
1960	204	3.0%
1970	171	−16.2%
1980	177	3.5%
1990	158	−10.7%
2000	122	−22.8%
2010	142	16.4%
2017 (est.)	134	[3]	−5.6%
U.S. Decennial Census[8]
2013 Estimate[9]

Please ascertain the quantity of rows and columns within the provided table. Provide the final answer in the JSON structure, using the format {"row_number": "m", "column_number": "n"}.

There are 14 rows and 4 columns in the table. So, the final answer is {"row_number": "14", "column_number": "4"}.