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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1952 | 5 |
| 1953 | 6 |
| 1954 | 5 |
| 1955 | 1 |
| 1956 | 11 |
| 1957 | 28 |
| 1958 | 25 |
| 1959 | 18 |
| 1960 | 31 |
| 1961 | 39 |
| 1962 | 32 |
| 1965 | 13 |
| 1966 | 56 |
| 1967 | 69 |
| 1968 | 70 |
| 1969 | 74 |
| 1970 | 90 |
| 1971 | 88 |
| 1972 | 96 |
| 1973 | 108 |
| 1974 | 96 |
| 1975 | 126 |
| 1976 | 146 |
| 1977 | 158 |
| 1978 | 149 |
| 1979 | 146 |
| 1980 | 192 |
| 1981 | 186 |
| 1982 | 206 |
| 1983 | 200 |
| 1984 | 234 |
| 1985 | 252 |
| 1986 | 224 |
| 1987 | 277 |
| 1988 | 275 |
| 1989 | 312 |
| 1990 | 312 |
| 1991 | 279 |
| 1992 | 241 |
| 1993 | 177 |
| 1994 | 157 |
| 1995 | 199 |
| 1996 | 193 |
| 1997 | 200 |
| 1998 | 238 |
| 1999 | 226 |
| 2000 | 292 |
| 2001 | 281 |
| 2002 | 338 |
| 2003 | 382 |
| 2004 | 398 |
| 2005 | 470 |
| 2006 | 515 |
| 2007 | 542 |
| 2008 | 460 |
| 2009 | 476 |
| 2010 | 420 |
| 2011 | 450 |
| 2012 | 488 |
| 2013 | 613 |
| 2014 | 622 |
| 2015 | 609 |
| 2016 | 525 |
| 2017 | 496 |
| 2018 | 446 |
| 2019 | 463 |
| 2020 | 408 |
| 2021 | 281 |
| 2022 | 105 |
| 2023 | 76 |
| 2024 | 29 |