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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1952 | 3 |
| 1953 | 10 |
| 1954 | 11 |
| 1955 | 11 |
| 1956 | 12 |
| 1957 | 5 |
| 1958 | 13 |
| 1959 | 4 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 16 |
| 1966 | 34 |
| 1967 | 50 |
| 1968 | 62 |
| 1969 | 59 |
| 1970 | 72 |
| 1971 | 84 |
| 1972 | 90 |
| 1973 | 123 |
| 1974 | 121 |
| 1975 | 103 |
| 1976 | 104 |
| 1977 | 129 |
| 1978 | 115 |
| 1979 | 128 |
| 1980 | 155 |
| 1981 | 204 |
| 1982 | 221 |
| 1983 | 217 |
| 1984 | 259 |
| 1985 | 286 |
| 1986 | 278 |
| 1987 | 248 |
| 1988 | 305 |
| 1989 | 297 |
| 1990 | 307 |
| 1991 | 329 |
| 1992 | 330 |
| 1993 | 382 |
| 1994 | 412 |
| 1995 | 361 |
| 1996 | 404 |
| 1997 | 387 |
| 1998 | 386 |
| 1999 | 349 |
| 2000 | 375 |
| 2001 | 352 |
| 2002 | 372 |
| 2003 | 454 |
| 2004 | 434 |
| 2005 | 525 |
| 2006 | 522 |
| 2007 | 514 |
| 2008 | 589 |
| 2009 | 554 |
| 2010 | 563 |
| 2011 | 520 |
| 2012 | 535 |
| 2013 | 519 |
| 2014 | 537 |
| 2015 | 497 |
| 2016 | 506 |
| 2017 | 462 |
| 2018 | 426 |
| 2019 | 504 |
| 2020 | 435 |
| 2021 | 325 |
| 2022 | 265 |
| 2023 | 18 |