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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 2 |
| 1951 | 1 |
| 1952 | 4 |
| 1953 | 8 |
| 1954 | 12 |
| 1955 | 11 |
| 1956 | 10 |
| 1957 | 13 |
| 1958 | 10 |
| 1959 | 25 |
| 1960 | 27 |
| 1961 | 28 |
| 1962 | 29 |
| 1966 | 1 |
| 1967 | 3 |
| 1968 | 3 |
| 1969 | 2 |
| 1970 | 4 |
| 1971 | 5 |
| 1972 | 6 |
| 1973 | 7 |
| 1974 | 32 |
| 1975 | 87 |
| 1976 | 106 |
| 1977 | 83 |
| 1978 | 36 |
| 1979 | 36 |
| 1980 | 35 |
| 1981 | 46 |
| 1982 | 45 |
| 1983 | 33 |
| 1984 | 35 |
| 1985 | 35 |
| 1986 | 32 |
| 1987 | 39 |
| 1988 | 44 |
| 1989 | 36 |
| 1990 | 59 |
| 1991 | 139 |
| 1992 | 114 |
| 1993 | 107 |
| 1994 | 130 |
| 1995 | 149 |
| 1996 | 157 |
| 1997 | 150 |
| 1998 | 176 |
| 1999 | 170 |
| 2000 | 214 |
| 2001 | 251 |
| 2002 | 271 |
| 2003 | 296 |
| 2004 | 390 |
| 2005 | 366 |
| 2006 | 402 |
| 2007 | 411 |
| 2008 | 400 |
| 2009 | 408 |
| 2010 | 470 |
| 2011 | 467 |
| 2012 | 469 |
| 2013 | 507 |
| 2014 | 530 |
| 2015 | 540 |
| 2016 | 484 |
| 2017 | 420 |
| 2018 | 441 |
| 2019 | 443 |
| 2020 | 319 |
| 2021 | 230 |
| 2022 | 147 |
| 2023 | 84 |
| 2024 | 75 |