issues,index_entries,year
52,1503,1898
99,2843,1899
98,2413,1900
92,2677,1901
62,1891,1902
50,1306,1903
53,1504,1904
50,1077,1905
51,1463,1906
51,2033,1907
50,1741,1908
51,1736,1909
52,1918,1910
45,1414,1911
39,1354,1912
48,1473,1913
49,1162,1914
51,1361,1915
50,994,1916
43,967,1917
50,1120,1918
51,1242,1919
51,1252,1920
52,1644,1921
37,1132,1922
51,1659,1923
51,1635,1924
51,1801,1925
51,1079,1926
52,1233,1927
51,1086,1928
50,1044,1929
52,1089,1930
51,1170,1931
51,1348,1932
51,1334,1933
51,1048,1934
52,938,1935
43,829,1936
1,15,1966