Quarter	Number Of Locomotives
1925-01-01	177.000
1925-04-01	123.000
1925-07-01	175.000
1925-10-01	504.000
1926-01-01	398.000
1926-04-01	313.000
1926-07-01	238.000
1926-10-01	294.000
1927-01-01	187.000
1927-04-01	197.000
1927-07-01	120.000
1927-10-01	170.000
1928-01-01	112.000
1928-04-01	111.000
1928-07-01	89.0000
1928-10-01	127.000
1929-01-01	346.000
1929-04-01	298.000
1929-07-01	153.000
1929-10-01	419.000
1930-01-01	212.000
1930-04-01	42.0000
1930-07-01	43.0000
1930-10-01	72.0000
1931-01-01	35.0000
1931-04-01	84.0000
1931-07-01	70.0000
1931-10-01	32.0000
1932-01-01	1.00000
1932-04-01	4.00000
1932-07-01	1.00000
1933-01-01	1.00000
1933-04-01	13.0000
1933-07-01	4.00000
1933-10-01	12.0000
1934-01-01	22.0000
1934-04-01	52.0000
1934-07-01	21.0000
1934-10-01	77.0000
1935-01-01	12.0000
1935-04-01	7.00000
1935-07-01	12.0000
1935-10-01	20.0000
1936-01-01	41.0000
1936-04-01	77.0000
1936-07-01	33.0000
1936-10-01	339.000
1937-01-01	125.000
1937-04-01	114.000
1937-07-01	40.0000
1937-10-01	21.0000
1938-01-01	37.0000
1938-04-01	63.0000
1938-07-01	26.0000
1938-10-01	76.0000
1939-01-01	82.0000
1939-04-01	89.0000
1939-07-01	51.0000
1939-10-01	96.0000
1940-01-01	86.0000
1940-04-01	130.000
1940-07-01	220.000
1940-10-01	186.000
1941-01-01	256.000
1941-04-01	374.000
1941-07-01	219.000
1941-10-01	155.000
1942-01-01	477.000
1942-04-01	213.000
1942-07-01	145.000
1942-10-01	159.000
1943-01-01	277.000
1943-04-01	320.000
1943-07-01	272.000
1943-10-01	104.000
1944-01-01	162.000
1944-04-01	283.000
1944-07-01	160.000
1944-10-01	68.0000
1945-01-01	244.000
1945-04-01	241.000
1945-07-01	171.000
1945-10-01	111.000
1946-01-01	262.000
1946-04-01	174.000
1946-07-01	182.000
1946-10-01	256.000
1947-01-01	353.000
1947-04-01	443.000
1947-07-01	277.000
1947-10-01	1019.00
1948-01-01	548.000
1948-04-01	575.000
1948-07-01	324.000
1948-10-01	662.000
1949-01-01	299.000
1949-04-01	390.000
1949-07-01	286.000
1949-10-01	507.000
1950-01-01	806.000
1950-04-01	618.000
1950-07-01	1420.00
1950-10-01	974.000