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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1917 | 4 |
| 1918 | 1 |
| 1919 | 1 |
| 1922 | 1 |
| 1928 | 1 |
| 1932 | 1 |
| 1933 | 1 |
| 1938 | 1 |
| 1945 | 5 |
| 1946 | 19 |
| 1947 | 17 |
| 1948 | 18 |
| 1949 | 26 |
| 1950 | 17 |
| 1951 | 27 |
| 1952 | 20 |
| 1953 | 25 |
| 1954 | 25 |
| 1955 | 25 |
| 1956 | 28 |
| 1957 | 18 |
| 1958 | 24 |
| 1959 | 32 |
| 1960 | 40 |
| 1961 | 22 |
| 1962 | 40 |
| 1963 | 56 |
| 1964 | 76 |
| 1965 | 71 |
| 1966 | 65 |
| 1967 | 86 |
| 1968 | 110 |
| 1969 | 138 |
| 1970 | 187 |
| 1971 | 282 |
| 1972 | 332 |
| 1973 | 304 |
| 1974 | 349 |
| 1975 | 301 |
| 1976 | 215 |
| 1977 | 232 |
| 1978 | 237 |
| 1979 | 247 |
| 1980 | 264 |
| 1981 | 220 |
| 1982 | 239 |
| 1983 | 288 |
| 1984 | 299 |
| 1985 | 264 |
| 1986 | 275 |
| 1987 | 244 |
| 1988 | 282 |
| 1989 | 278 |
| 1990 | 317 |
| 1991 | 364 |
| 1992 | 284 |
| 1993 | 366 |
| 1994 | 380 |
| 1995 | 342 |
| 1996 | 428 |
| 1997 | 482 |
| 1998 | 476 |
| 1999 | 539 |
| 2000 | 619 |
| 2001 | 769 |
| 2002 | 869 |
| 2003 | 822 |
| 2004 | 929 |
| 2005 | 1171 |
| 2006 | 1151 |
| 2007 | 1255 |
| 2008 | 1385 |
| 2009 | 1254 |
| 2010 | 1311 |
| 2011 | 1360 |
| 2012 | 1402 |
| 2013 | 1353 |
| 2014 | 1287 |
| 2015 | 1277 |
| 2016 | 1189 |
| 2017 | 1176 |
| 2018 | 1240 |
| 2019 | 1296 |
| 2020 | 1353 |
| 2021 | 1425 |
| 2022 | 1340 |
| 2023 | 1232 |
| 2024 | 478 |