Month	Number Of Units
1939-01-01	20626.0
1939-02-01	20533.0
1939-03-01	29046.0
1939-04-01	27640.0
1939-05-01	29093.0
1939-06-01	27141.0
1939-07-01	24120.0
1939-08-01	27310.0
1939-09-01	25007.0
1939-10-01	27472.0
1939-11-01	25221.0
1939-12-01	20338.0
1940-01-01	15981.0
1940-02-01	20974.0
1940-03-01	28513.0
1940-04-01	34194.0
1940-05-01	33237.0
1940-06-01	27694.0
1940-07-01	31580.0
1940-08-01	31630.0
1940-09-01	31082.0
1940-10-01	33157.0
1940-11-01	23475.0
1940-12-01	21649.0
1941-01-01	24361.0
1941-02-01	21795.0
1941-03-01	31838.0
1941-04-01	38316.0
1941-05-01	39405.0
1941-06-01	37302.0
1941-07-01	40474.0
1941-08-01	34029.0
1941-09-01	30801.0
1941-10-01	29709.0
1941-11-01	24337.0
1941-12-01	17098.0
1942-01-01	16956.0
1942-02-01	21599.0
1942-03-01	28988.0
1942-04-01	25422.0
1942-05-01	12381.0
1942-06-01	11344.0
1942-07-01	12838.0
1942-08-01	13397.0
1942-09-01	13312.0
1942-10-01	11518.0
1942-11-01	9144.00
1942-12-01	7993.00
1943-01-01	5870.00
1943-02-01	6115.00
1943-03-01	9299.00
1943-04-01	9868.00
1943-05-01	12346.0
1943-06-01	11422.0
1943-07-01	11086.0
1943-08-01	13088.0
1943-09-01	10906.0
1943-10-01	11840.0
1943-11-01	9412.00
1943-12-01	8462.00
1944-01-01	8222.00
1944-02-01	7860.00
1944-03-01	9020.00
1944-04-01	8528.00
1944-05-01	9743.00
1944-06-01	9973.00
1944-07-01	8114.00
1944-08-01	7273.00
1944-09-01	6228.00
1944-10-01	6882.00
1944-11-01	6364.00
1944-12-01	4966.00
1945-01-01	5014.00
1945-02-01	5315.00
1945-03-01	7949.00
1945-04-01	9420.00
1945-05-01	11123.0
1945-06-01	12010.0
1945-07-01	12950.0
1945-08-01	12893.0
1945-09-01	14405.0
1945-10-01	18717.0
1945-11-01	20104.0
1945-12-01	19299.0
1946-01-01	25941.0
1946-02-01	28737.0
1946-03-01	50834.0
1946-04-01	45278.0
1946-05-01	43557.0
1946-06-01	38150.0
1946-07-01	37967.0
1946-08-01	38661.0
1946-09-01	35046.0
1946-10-01	36098.0
1946-11-01	28552.0
1946-12-01	21374.0
1947-01-01	24286.0
1947-02-01	27144.0
1947-03-01	37163.0
1947-04-01	42566.0
1947-05-01	41020.0
1947-06-01	46039.0
1947-07-01	47132.0
1947-08-01	51121.0
1947-09-01	51963.0
1947-10-01	56822.0
1947-11-01	41034.0
1947-12-01	36022.0
1948-01-01	32534.0
1948-02-01	32185.0
1948-03-01	50565.0
1948-04-01	64317.0
1948-05-01	52510.0
1948-06-01	54231.0
1948-07-01	47433.0
1948-08-01	46604.0
1948-09-01	39309.0
1948-10-01	38503.0
1948-11-01	32435.0
1948-12-01	25553.0
1949-01-01	23532.0
1949-02-01	26714.0
1949-03-01	42510.0
1949-04-01	51254.0
1949-05-01	54414.0
1949-06-01	55599.0
1949-07-01	48522.0
1949-08-01	57121.0
1949-09-01	62457.0
1949-10-01	57355.0
1949-11-01	52386.0
1949-12-01	43422.0
1950-01-01	49733.0
1950-02-01	53439.0
1950-03-01	79366.0
1950-04-01	81564.0
1950-05-01	88963.0
1950-06-01	83013.0
1950-07-01	79587.0
1950-08-01	79253.0
1950-09-01	58372.0
1950-10-01	55198.0
1950-11-01	44966.0
1950-12-01	45045.0
1951-01-01	49637.0
1951-02-01	39778.0
1951-03-01	50886.0
1951-04-01	50851.0
1951-05-01	54713.0
1951-06-01	47087.0
1951-07-01	42046.0
1951-08-01	47200.0
1951-09-01	50537.0
1951-10-01	42216.0
1951-11-01	32833.0
1951-12-01	26821.0
1952-01-01	34426.0
1952-02-01	43237.0
1952-03-01	50026.0
1952-04-01	56105.0
1952-05-01	53052.0
1952-06-01	48909.0
1952-07-01	50554.0
1952-08-01	48768.0
1952-09-01	52528.0
1952-10-01	52785.0
1952-11-01	38314.0
1952-12-01	33905.0
1953-01-01	35103.0
1953-02-01	40199.0
1953-03-01	56153.0
1953-04-01	57303.0
1953-05-01	52742.0
1953-06-01	51749.0
1953-07-01	46697.0
1953-08-01	44528.0
1953-09-01	42939.0
1953-10-01	43148.0
1953-11-01	34363.0
1953-12-01	32074.0
1954-01-01	33173.0
1954-02-01	37819.0
1954-03-01	53662.0
1954-04-01	56942.0
1954-05-01	52703.0
1954-06-01	59526.0