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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 36 |
| 1965 | 36 |
| 1966 | 40 |
| 1967 | 74 |
| 1968 | 98 |
| 1969 | 79 |
| 1970 | 85 |
| 1971 | 110 |
| 1972 | 114 |
| 1973 | 125 |
| 1974 | 119 |
| 1975 | 135 |
| 1976 | 153 |
| 1977 | 147 |
| 1978 | 143 |
| 1979 | 147 |
| 1980 | 167 |
| 1981 | 147 |
| 1982 | 183 |
| 1983 | 174 |
| 1984 | 135 |
| 1985 | 152 |
| 1986 | 153 |
| 1987 | 178 |
| 1988 | 173 |
| 1989 | 176 |
| 1990 | 179 |
| 1991 | 207 |
| 1992 | 227 |
| 1993 | 251 |
| 1994 | 262 |
| 1995 | 293 |
| 1996 | 311 |
| 1997 | 292 |
| 1998 | 316 |
| 1999 | 290 |
| 2000 | 234 |
| 2001 | 215 |
| 2002 | 223 |
| 2003 | 219 |
| 2004 | 323 |
| 2005 | 290 |
| 2006 | 348 |
| 2007 | 497 |
| 2008 | 496 |
| 2009 | 566 |
| 2010 | 443 |
| 2011 | 561 |
| 2012 | 512 |
| 2013 | 481 |
| 2014 | 724 |
| 2015 | 717 |
| 2016 | 853 |
| 2017 | 827 |
| 2018 | 492 |
| 2019 | 545 |
| 2020 | 629 |
| 2021 | 438 |
| 2022 | 373 |
| 2023 | 331 |
| 2024 | 456 |
| 2025 | 374 |