Month	Number Of Buildings (See Note)
1919-01-01	2193.00
1919-02-01	3409.00
1919-03-01	6262.00
1919-04-01	11131.0
1919-05-01	12758.0
1919-06-01	11491.0
1919-07-01	11864.0
1919-08-01	11209.0
1919-09-01	9833.00
1919-10-01	12928.0
1919-11-01	8049.00
1919-12-01	6846.00
1920-01-01	5022.00
1920-02-01	3903.00
1920-03-01	7087.00
1920-04-01	11144.0
1920-05-01	9441.00
1920-06-01	5584.00
1920-07-01	4433.00
1920-08-01	5935.00
1920-09-01	4100.00
1920-10-01	5684.00
1920-11-01	3401.00
1920-12-01	3097.00
1921-01-01	3100.00
1921-02-01	3696.00
1921-03-01	5769.00
1921-04-01	6974.00
1921-05-01	7135.00
1921-06-01	6668.00
1921-07-01	5500.00
1921-08-01	6551.00
1921-09-01	8162.00
1921-10-01	8161.00
1921-11-01	7085.00
1921-12-01	7092.00
1922-01-01	6691.00
1922-02-01	5486.00
1922-03-01	11082.0
1922-04-01	11393.0
1922-05-01	11850.0
1922-06-01	11571.0
1922-07-01	8904.00
1922-08-01	9918.00
1922-09-01	9279.00
1922-10-01	10436.0
1922-11-01	10465.0
1922-12-01	8842.00
1923-01-01	8101.00
1923-02-01	8162.00
1923-03-01	13044.0
1923-04-01	14289.0
1923-05-01	13496.0
1923-06-01	9414.00
1923-07-01	9492.00
1923-08-01	9062.00
1923-09-01	8446.00
1923-10-01	12231.0
1923-11-01	10902.0
1923-12-01	10780.0
1924-01-01	10563.0
1924-02-01	9909.00
1924-03-01	17209.0
1924-04-01	15400.0
1924-05-01	12398.0
1924-06-01	10248.0
1924-07-01	8704.00
1924-08-01	9543.00
1924-09-01	9779.00
1924-10-01	11351.0
1924-11-01	11225.0
1924-12-01	10560.0
1925-01-01	8590.00
1925-02-01	9775.00
1925-03-01	16828.0
1925-04-01	17647.0
1925-05-01	15668.0
1925-06-01	14050.0
1925-07-01	15149.0
1925-08-01	14967.0
1925-09-01	12673.0
1925-10-01	14415.0
1925-11-01	12670.0
1925-12-01	11768.0
1926-01-01	9345.00
1926-02-01	7841.00
1926-03-01	14472.0
1926-04-01	16536.0
1926-05-01	15624.0
1926-06-01	14674.0
1926-07-01	11367.0
1926-08-01	12370.0
1926-09-01	12226.0
1926-10-01	12960.0
1926-11-01	12575.0
1926-12-01	10271.0