Year	Number Of Ovens
1880	12372.0
1881	14119.0
1882	16356.0
1883	18304.0
1884	19557.0
1885	20116.0
1886	22597.0
1887	26001.0
1888	30059.0
1889	34165.0
1890	37158.0
1891	40057.0
1892	42002.0
1893	44201.0
1894	44772.0
1895	45565.0
1896	46944.0
1897	47668.0
1898	48383.0
1899	49603.0
1900	58484.0
1901	63951.0
1902	69069.0
1903	79334.0
1904	83599.0
1905	87508.0
1906	93901.0
1907	99680.0
1908	101218.
1909	103982.
1910	104440.
1911	103879.
1912	102230.
1913	102650.
1914	99755.0
1915	99378.0
1916	98864.0
1917	95896.0
1918	93914.0
1919	92939.0
1920	86179.0
1921	77156.0
1922	75170.0
1923	73505.0
1924	71845.0
1925	68877.0
1926	64274.0
1927	62270.0
1928	53832.0
1929	42731.0
1930	36738.0
1931	34696.0
1932	32493.0
1933	29910.0
1934	27169.0
1935	26534.0
1936	25861.0
1937	24912.0
1938	23540.0
1939	23666.0
1940	27884.0
1941	31685.0
1942	29598.0
1943	31919.0
1944	30898.0
1945	26689.0
1946	27358.0