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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 4 |
| 1953 | 5 |
| 1954 | 1 |
| 1956 | 7 |
| 1957 | 15 |
| 1958 | 38 |
| 1959 | 26 |
| 1960 | 54 |
| 1961 | 30 |
| 1962 | 43 |
| 1963 | 26 |
| 1964 | 24 |
| 1965 | 23 |
| 1968 | 1 |
| 1971 | 1 |
| 1973 | 12 |
| 1974 | 30 |
| 1975 | 101 |
| 1976 | 99 |
| 1977 | 111 |
| 1978 | 105 |
| 1979 | 103 |
| 1980 | 112 |
| 1981 | 110 |
| 1982 | 124 |
| 1983 | 126 |
| 1984 | 123 |
| 1985 | 136 |
| 1986 | 147 |
| 1987 | 173 |
| 1988 | 174 |
| 1989 | 258 |
| 1990 | 273 |
| 1991 | 250 |
| 1992 | 267 |
| 1993 | 381 |
| 1994 | 351 |
| 1995 | 410 |
| 1996 | 400 |
| 1997 | 429 |
| 1998 | 390 |
| 1999 | 399 |
| 2000 | 433 |
| 2001 | 467 |
| 2002 | 463 |
| 2003 | 426 |
| 2004 | 457 |
| 2005 | 403 |
| 2006 | 455 |
| 2007 | 452 |
| 2008 | 434 |
| 2009 | 446 |
| 2010 | 420 |
| 2011 | 430 |
| 2012 | 418 |
| 2013 | 462 |
| 2014 | 452 |
| 2015 | 475 |
| 2016 | 380 |
| 2017 | 398 |
| 2018 | 382 |
| 2019 | 367 |
| 2020 | 341 |
| 2021 | 244 |
| 2022 | 154 |
| 2023 | 114 |
| 2024 | 46 |