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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 7 |
| 1973 | 4 |
| 1974 | 9 |
| 1975 | 10 |
| 1976 | 5 |
| 1977 | 9 |
| 1978 | 5 |
| 1979 | 6 |
| 1980 | 11 |
| 1981 | 14 |
| 1982 | 22 |
| 1983 | 33 |
| 1984 | 23 |
| 1985 | 14 |
| 1986 | 19 |
| 1987 | 14 |
| 1988 | 14 |
| 1989 | 20 |
| 1990 | 52 |
| 1991 | 132 |
| 1992 | 147 |
| 1993 | 165 |
| 1994 | 206 |
| 1995 | 232 |
| 1996 | 217 |
| 1997 | 212 |
| 1998 | 316 |
| 1999 | 321 |
| 2000 | 322 |
| 2001 | 370 |
| 2002 | 333 |
| 2003 | 283 |
| 2004 | 301 |
| 2005 | 338 |
| 2006 | 319 |
| 2007 | 345 |
| 2008 | 338 |
| 2009 | 272 |
| 2010 | 296 |
| 2011 | 364 |
| 2012 | 380 |
| 2013 | 341 |
| 2014 | 345 |
| 2015 | 325 |
| 2016 | 298 |
| 2017 | 319 |
| 2018 | 294 |
| 2019 | 309 |
| 2020 | 285 |
| 2021 | 229 |
| 2022 | 95 |
| 2023 | 56 |
| 2024 | 27 |