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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1964 | 17 |
| 1965 | 89 |
| 1966 | 192 |
| 1967 | 209 |
| 1968 | 278 |
| 1969 | 231 |
| 1970 | 266 |
| 1971 | 324 |
| 1972 | 350 |
| 1973 | 341 |
| 1974 | 353 |
| 1975 | 341 |
| 1976 | 307 |
| 1977 | 320 |
| 1978 | 332 |
| 1979 | 319 |
| 1980 | 367 |
| 1981 | 354 |
| 1982 | 313 |
| 1983 | 346 |
| 1984 | 302 |
| 1985 | 289 |
| 1986 | 283 |
| 1987 | 272 |
| 1988 | 281 |
| 1989 | 296 |
| 1990 | 279 |
| 1991 | 232 |
| 1992 | 182 |
| 1993 | 155 |
| 1994 | 168 |
| 1995 | 158 |
| 1996 | 148 |
| 1997 | 124 |
| 1998 | 120 |
| 1999 | 98 |
| 2000 | 96 |
| 2001 | 84 |
| 2002 | 99 |
| 2003 | 83 |
| 2004 | 73 |
| 2005 | 93 |
| 2006 | 92 |
| 2007 | 74 |
| 2008 | 72 |
| 2009 | 83 |
| 2010 | 68 |
| 2011 | 64 |
| 2012 | 61 |
| 2013 | 56 |
| 2014 | 43 |
| 2015 | 47 |
| 2016 | 32 |
| 2017 | 34 |
| 2018 | 29 |
| 2019 | 23 |
| 2020 | 14 |
| 2021 | 12 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |