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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 16 |
| 1960 | 43 |
| 1961 | 33 |
| 1962 | 26 |
| 1963 | 2 |
| 1965 | 28 |
| 1966 | 85 |
| 1967 | 108 |
| 1968 | 143 |
| 1969 | 143 |
| 1970 | 180 |
| 1971 | 200 |
| 1972 | 184 |
| 1973 | 213 |
| 1974 | 198 |
| 1975 | 178 |
| 1976 | 179 |
| 1977 | 188 |
| 1978 | 162 |
| 1979 | 204 |
| 1980 | 228 |
| 1981 | 189 |
| 1982 | 245 |
| 1983 | 193 |
| 1984 | 232 |
| 1985 | 252 |
| 1986 | 234 |
| 1987 | 240 |
| 1988 | 259 |
| 1989 | 304 |
| 1990 | 285 |
| 1991 | 265 |
| 1992 | 312 |
| 1993 | 260 |
| 1994 | 256 |
| 1995 | 232 |
| 1996 | 218 |
| 1997 | 252 |
| 1998 | 258 |
| 1999 | 255 |
| 2000 | 273 |
| 2001 | 267 |
| 2002 | 288 |
| 2003 | 275 |
| 2004 | 307 |
| 2005 | 296 |
| 2006 | 311 |
| 2007 | 323 |
| 2008 | 317 |
| 2009 | 348 |
| 2010 | 355 |
| 2011 | 329 |
| 2012 | 346 |
| 2013 | 383 |
| 2014 | 387 |
| 2015 | 343 |
| 2016 | 313 |
| 2017 | 303 |
| 2018 | 276 |
| 2019 | 306 |
| 2020 | 256 |
| 2021 | 226 |
| 2022 | 253 |
| 2023 | 241 |
| 2024 | 75 |