Year Thousands Of Persons 1900 17710.0 1901 18639.0 1902 20141.0 1903 20088.0 1904 20477.0 1905 22123.0 1906 23431.0 1907 23691.0 1908 22741.0 1909 24996.0 1910 25824.0 1911 25455.0 1912 26542.0 1913 26870.0 1914 26003.0 1915 26179.0 1916 28563.0 1917 30714.0 1918 30714.0 1919 30270.0 1920 30260.0 1921 26610.0 1922 28984.0 1923 32055.0 1924 31598.0 1925 33210.0 1926 34442.0 1927 34544.0 1928 35246.0 1929 37125.0 1930 34646.0 1931 31113.0 1932 27405.0 1933 27548.0 1934 30361.0 1935 31254.0 1936 33492.0 1937 35073.0 1938 32287.0 1939 33885.0 1940 35530.0 1941 39365.0 1942 41640.0 1943 42833.0