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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1952 | 1 |
| 1953 | 4 |
| 1954 | 5 |
| 1955 | 3 |
| 1956 | 5 |
| 1957 | 3 |
| 1958 | 4 |
| 1959 | 3 |
| 1961 | 2 |
| 1964 | 1 |
| 1965 | 12 |
| 1966 | 14 |
| 1967 | 22 |
| 1968 | 17 |
| 1969 | 32 |
| 1970 | 36 |
| 1971 | 44 |
| 1972 | 56 |
| 1973 | 60 |
| 1974 | 54 |
| 1975 | 34 |
| 1976 | 31 |
| 1977 | 37 |
| 1978 | 24 |
| 1979 | 29 |
| 1980 | 44 |
| 1981 | 28 |
| 1982 | 36 |
| 1983 | 55 |
| 1984 | 71 |
| 1985 | 60 |
| 1986 | 68 |
| 1987 | 70 |
| 1988 | 113 |
| 1989 | 124 |
| 1990 | 95 |
| 1991 | 126 |
| 1992 | 138 |
| 1993 | 155 |
| 1994 | 185 |
| 1995 | 161 |
| 1996 | 163 |
| 1997 | 179 |
| 1998 | 190 |
| 1999 | 223 |
| 2000 | 195 |
| 2001 | 229 |
| 2002 | 230 |
| 2003 | 293 |
| 2004 | 333 |
| 2005 | 345 |
| 2006 | 371 |
| 2007 | 384 |
| 2008 | 414 |
| 2009 | 422 |
| 2010 | 405 |
| 2011 | 403 |
| 2012 | 391 |
| 2013 | 399 |
| 2014 | 457 |
| 2015 | 424 |
| 2016 | 389 |
| 2017 | 306 |
| 2018 | 349 |
| 2019 | 340 |
| 2020 | 332 |
| 2021 | 202 |
| 2022 | 190 |
| 2023 | 169 |
| 2024 | 282 |
| 2025 | 128 |