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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 23 |
| 1965 | 34 |
| 1966 | 38 |
| 1967 | 34 |
| 1968 | 46 |
| 1969 | 79 |
| 1970 | 36 |
| 1971 | 62 |
| 1972 | 86 |
| 1973 | 73 |
| 1974 | 89 |
| 1975 | 71 |
| 1976 | 79 |
| 1977 | 74 |
| 1978 | 80 |
| 1979 | 92 |
| 1980 | 90 |
| 1981 | 101 |
| 1982 | 126 |
| 1983 | 91 |
| 1984 | 89 |
| 1985 | 102 |
| 1986 | 134 |
| 1987 | 126 |
| 1988 | 136 |
| 1989 | 142 |
| 1990 | 159 |
| 1991 | 150 |
| 1992 | 174 |
| 1993 | 157 |
| 1994 | 183 |
| 1995 | 160 |
| 1996 | 148 |
| 1997 | 161 |
| 1998 | 196 |
| 1999 | 143 |
| 2000 | 150 |
| 2001 | 227 |
| 2002 | 199 |
| 2003 | 244 |
| 2004 | 229 |
| 2005 | 280 |
| 2006 | 299 |
| 2007 | 333 |
| 2008 | 337 |
| 2009 | 413 |
| 2010 | 422 |
| 2011 | 268 |
| 2012 | 289 |
| 2013 | 338 |
| 2014 | 276 |
| 2015 | 319 |
| 2016 | 293 |
| 2017 | 287 |
| 2018 | 296 |
| 2019 | 243 |
| 2020 | 292 |
| 2021 | 268 |
| 2022 | 250 |
| 2023 | 328 |
| 2024 | 144 |