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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 2 |
| 1956 | 48 |
| 1957 | 88 |
| 1958 | 96 |
| 1959 | 88 |
| 1960 | 67 |
| 1961 | 65 |
| 1962 | 71 |
| 1963 | 21 |
| 1964 | 40 |
| 1965 | 159 |
| 1966 | 307 |
| 1967 | 344 |
| 1968 | 412 |
| 1969 | 424 |
| 1970 | 486 |
| 1971 | 491 |
| 1972 | 485 |
| 1973 | 484 |
| 1974 | 510 |
| 1975 | 485 |
| 1976 | 459 |
| 1977 | 454 |
| 1978 | 420 |
| 1979 | 425 |
| 1980 | 381 |
| 1981 | 395 |
| 1982 | 363 |
| 1983 | 346 |
| 1984 | 354 |
| 1985 | 334 |
| 1986 | 373 |
| 1987 | 331 |
| 1988 | 322 |
| 1989 | 304 |
| 1990 | 283 |
| 1991 | 251 |
| 1992 | 243 |
| 1993 | 242 |
| 1994 | 238 |
| 1995 | 264 |
| 1996 | 200 |
| 1997 | 219 |
| 1998 | 198 |
| 1999 | 216 |
| 2000 | 198 |
| 2001 | 226 |
| 2002 | 232 |
| 2003 | 224 |
| 2004 | 213 |
| 2005 | 178 |
| 2006 | 202 |
| 2007 | 181 |
| 2008 | 200 |
| 2009 | 221 |
| 2010 | 210 |
| 2011 | 247 |
| 2012 | 202 |
| 2013 | 202 |
| 2014 | 199 |
| 2015 | 182 |
| 2016 | 176 |
| 2017 | 165 |
| 2018 | 149 |
| 2019 | 167 |
| 2020 | 127 |
| 2021 | 110 |
| 2022 | 71 |
| 2023 | 30 |