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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1956 | 13 |
| 1957 | 22 |
| 1958 | 20 |
| 1959 | 14 |
| 1960 | 29 |
| 1961 | 23 |
| 1962 | 11 |
| 1964 | 3 |
| 1965 | 59 |
| 1966 | 108 |
| 1967 | 177 |
| 1968 | 233 |
| 1969 | 269 |
| 1970 | 295 |
| 1971 | 355 |
| 1972 | 376 |
| 1973 | 478 |
| 1974 | 427 |
| 1975 | 448 |
| 1976 | 424 |
| 1977 | 418 |
| 1978 | 377 |
| 1979 | 477 |
| 1980 | 451 |
| 1981 | 434 |
| 1982 | 409 |
| 1983 | 476 |
| 1984 | 427 |
| 1985 | 418 |
| 1986 | 397 |
| 1987 | 382 |
| 1988 | 304 |
| 1989 | 362 |
| 1990 | 351 |
| 1991 | 287 |
| 1992 | 283 |
| 1993 | 229 |
| 1994 | 226 |
| 1995 | 207 |
| 1996 | 212 |
| 1997 | 144 |
| 1998 | 166 |
| 1999 | 155 |
| 2000 | 159 |
| 2001 | 133 |
| 2002 | 120 |
| 2003 | 103 |
| 2004 | 111 |
| 2005 | 105 |
| 2006 | 107 |
| 2007 | 115 |
| 2008 | 99 |
| 2009 | 98 |
| 2010 | 102 |
| 2011 | 76 |
| 2012 | 55 |
| 2013 | 82 |
| 2014 | 94 |
| 2015 | 77 |
| 2016 | 74 |
| 2017 | 69 |
| 2018 | 67 |
| 2019 | 71 |
| 2020 | 45 |
| 2021 | 40 |
| 2022 | 31 |
| 2023 | 24 |
| 2024 | 24 |