Quarter	Number Of Firms
1919-01-01	57.0000
1919-04-01	82.0000
1919-07-01	147.000
1919-10-01	125.000
1920-01-01	209.000
1920-04-01	186.000
1920-07-01	188.000
1920-10-01	166.000
1921-01-01	184.000
1921-04-01	99.0000
1921-07-01	80.0000
1921-10-01	122.000
1922-01-01	86.0000
1922-04-01	53.0000
1922-07-01	82.0000
1922-10-01	76.0000
1923-01-01	84.0000
1923-04-01	67.0000
1923-07-01	44.0000
1923-10-01	105.000
1924-01-01	110.000
1924-04-01	71.0000
1924-07-01	87.0000
1924-10-01	85.0000
1925-01-01	124.000
1925-04-01	104.000
1925-07-01	127.000
1925-10-01	175.000
1926-01-01	286.000
1926-04-01	236.000
1926-07-01	171.000
1926-10-01	146.000
1927-01-01	161.000
1927-04-01	247.000
1927-07-01	220.000
1927-10-01	213.000
1928-01-01	197.000
1928-04-01	315.000
1928-07-01	242.000
1928-10-01	274.000
1929-01-01	349.000
1929-04-01	395.000
1929-07-01	312.000
1929-10-01	160.000
1930-01-01	204.000
1930-04-01	237.000
1930-07-01	156.000
1930-10-01	189.000
1931-01-01	163.000
1931-04-01	142.000
1931-07-01	87.0000
1931-10-01	71.0000
1932-01-01	7.00000
1932-04-01	102.000
1932-07-01	46.0000
1932-10-01	40.0000
1933-01-01	19.0000
1933-04-01	43.0000
1933-07-01	33.0000
1933-10-01	12.0000
1934-01-01	19.0000
1934-04-01	25.0000
1934-07-01	34.0000
1934-10-01	23.0000
1935-01-01	36.0000
1935-04-01	27.0000
1935-07-01	38.0000
1935-10-01	24.0000
1936-01-01	39.0000
1936-04-01	25.0000
1936-07-01	27.0000
1936-10-01	32.0000
1937-01-01	32.0000
1937-04-01	27.0000
1937-07-01	29.0000
1937-10-01	31.0000
1938-01-01	32.0000
1938-04-01	20.0000
1938-07-01	22.0000
1938-10-01	33.0000
1939-01-01	24.0000
1939-04-01	22.0000
1939-07-01	16.0000
1939-10-01	25.0000
1940-01-01	29.0000
1940-04-01	45.0000
1940-07-01	30.0000
1940-10-01	36.0000
1941-01-01	22.0000
1941-04-01	23.0000
1941-07-01	24.0000
1941-10-01	42.0000
1942-01-01	19.0000
1942-04-01	17.0000
1942-07-01	31.0000
1942-10-01	51.0000
1943-01-01	44.0000
1943-04-01	43.0000
1943-07-01	47.0000
1943-10-01	79.0000
1944-01-01	68.0000
1944-04-01	73.0000
1944-07-01	79.0000
1944-10-01	104.000
1945-01-01	59.0000
1945-04-01	53.0000
1945-07-01	79.0000
1945-10-01	142.000
1946-01-01	95.0000
1946-04-01	132.000
1946-07-01	109.000
1946-10-01	83.0000
1947-01-01	98.0000
1947-04-01	97.0000
1947-07-01	84.0000
1947-10-01	125.000
1948-01-01	60.0000
1948-04-01	55.0000
1948-07-01	52.0000
1948-10-01	52.0000
1949-01-01	31.0000
1949-04-01	26.0000
1949-07-01	31.0000
1949-10-01	33.0000
1950-01-01	46.0000
1950-04-01	58.0000
1950-07-01	51.0000
1950-10-01	64.0000
1951-01-01	46.0000
1951-04-01	43.0000
1951-07-01	66.0000
1951-10-01	72.0000
1952-01-01	69.0000
1952-04-01	69.0000
1952-07-01	74.0000
1952-10-01	76.0000
1953-01-01	55.0000
1953-04-01	87.0000
1953-07-01	55.0000
1953-10-01	91.0000
1954-01-01	74.0000
1954-04-01	72.0000
1954-07-01	109.000
1954-10-01	130.000