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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 59 |
| 1967 | 107 |
| 1968 | 117 |
| 1969 | 167 |
| 1970 | 154 |
| 1971 | 203 |
| 1972 | 207 |
| 1973 | 225 |
| 1974 | 213 |
| 1975 | 209 |
| 1976 | 177 |
| 1977 | 189 |
| 1978 | 199 |
| 1979 | 194 |
| 1980 | 220 |
| 1981 | 218 |
| 1982 | 225 |
| 1983 | 221 |
| 1984 | 240 |
| 1985 | 251 |
| 1986 | 240 |
| 1987 | 205 |
| 1988 | 247 |
| 1989 | 257 |
| 1990 | 227 |
| 1991 | 274 |
| 1992 | 274 |
| 1993 | 272 |
| 1994 | 299 |
| 1995 | 274 |
| 1996 | 263 |
| 1997 | 275 |
| 1998 | 323 |
| 1999 | 281 |
| 2000 | 342 |
| 2001 | 334 |
| 2002 | 315 |
| 2003 | 392 |
| 2004 | 407 |
| 2005 | 385 |
| 2006 | 468 |
| 2007 | 493 |
| 2008 | 521 |
| 2009 | 483 |
| 2010 | 473 |
| 2011 | 554 |
| 2012 | 534 |
| 2013 | 497 |
| 2014 | 518 |
| 2015 | 447 |
| 2016 | 419 |
| 2017 | 394 |
| 2018 | 358 |
| 2019 | 321 |
| 2020 | 258 |
| 2021 | 149 |
| 2022 | 22 |
| 2024 | 1 |