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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1954 | 2 |
| 1956 | 1 |
| 1957 | 2 |
| 1958 | 3 |
| 1961 | 6 |
| 1962 | 10 |
| 1963 | 19 |
| 1964 | 15 |
| 1965 | 23 |
| 1966 | 17 |
| 1967 | 26 |
| 1968 | 48 |
| 1969 | 35 |
| 1970 | 37 |
| 1971 | 30 |
| 1972 | 28 |
| 1973 | 26 |
| 1974 | 24 |
| 1975 | 37 |
| 1976 | 24 |
| 1977 | 52 |
| 1978 | 50 |
| 1979 | 46 |
| 1980 | 59 |
| 1981 | 55 |
| 1982 | 72 |
| 1983 | 87 |
| 1984 | 103 |
| 1985 | 103 |
| 1986 | 92 |
| 1987 | 89 |
| 1988 | 90 |
| 1989 | 90 |
| 1990 | 99 |
| 1991 | 100 |
| 1992 | 103 |
| 1993 | 107 |
| 1994 | 99 |
| 1995 | 93 |
| 1996 | 130 |
| 1997 | 135 |
| 1998 | 148 |
| 1999 | 152 |
| 2000 | 155 |
| 2001 | 184 |
| 2002 | 171 |
| 2003 | 200 |
| 2004 | 243 |
| 2005 | 274 |
| 2006 | 314 |
| 2007 | 291 |
| 2008 | 311 |
| 2009 | 287 |
| 2010 | 333 |
| 2011 | 370 |
| 2012 | 389 |
| 2013 | 369 |
| 2014 | 401 |
| 2015 | 427 |
| 2016 | 436 |
| 2017 | 419 |
| 2018 | 411 |
| 2019 | 394 |
| 2020 | 478 |
| 2021 | 511 |
| 2022 | 527 |
| 2023 | 460 |
| 2024 | 433 |
| 2025 | 355 |