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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 13 |
| 1966 | 36 |
| 1967 | 49 |
| 1968 | 30 |
| 1969 | 52 |
| 1970 | 49 |
| 1971 | 69 |
| 1972 | 53 |
| 1973 | 72 |
| 1974 | 64 |
| 1975 | 49 |
| 1976 | 58 |
| 1977 | 44 |
| 1978 | 37 |
| 1979 | 64 |
| 1980 | 53 |
| 1981 | 57 |
| 1982 | 53 |
| 1983 | 82 |
| 1984 | 76 |
| 1985 | 107 |
| 1986 | 87 |
| 1987 | 80 |
| 1988 | 110 |
| 1989 | 88 |
| 1990 | 114 |
| 1991 | 98 |
| 1992 | 115 |
| 1993 | 113 |
| 1994 | 132 |
| 1995 | 129 |
| 1996 | 104 |
| 1997 | 140 |
| 1998 | 196 |
| 1999 | 210 |
| 2000 | 204 |
| 2001 | 198 |
| 2002 | 227 |
| 2003 | 214 |
| 2004 | 205 |
| 2005 | 227 |
| 2006 | 224 |
| 2007 | 295 |
| 2008 | 251 |
| 2009 | 279 |
| 2010 | 298 |
| 2011 | 336 |
| 2012 | 309 |
| 2013 | 314 |
| 2014 | 308 |
| 2015 | 315 |
| 2016 | 294 |
| 2017 | 305 |
| 2018 | 264 |
| 2019 | 305 |
| 2020 | 337 |
| 2021 | 275 |
| 2022 | 216 |
| 2023 | 163 |
| 2024 | 260 |
| 2025 | 167 |