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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 3 |
| 1960 | 1 |
| 1965 | 1 |
| 1966 | 2 |
| 1968 | 2 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 5 |
| 1973 | 15 |
| 1974 | 21 |
| 1975 | 31 |
| 1976 | 46 |
| 1977 | 82 |
| 1978 | 51 |
| 1979 | 81 |
| 1980 | 89 |
| 1981 | 87 |
| 1982 | 84 |
| 1983 | 73 |
| 1984 | 99 |
| 1985 | 82 |
| 1986 | 90 |
| 1987 | 135 |
| 1988 | 103 |
| 1989 | 186 |
| 1990 | 226 |
| 1991 | 158 |
| 1992 | 281 |
| 1993 | 170 |
| 1994 | 352 |
| 1995 | 281 |
| 1996 | 194 |
| 1997 | 270 |
| 1998 | 249 |
| 1999 | 198 |
| 2000 | 178 |
| 2001 | 245 |
| 2002 | 233 |
| 2003 | 242 |
| 2004 | 294 |
| 2005 | 325 |
| 2006 | 275 |
| 2007 | 247 |
| 2008 | 323 |
| 2009 | 296 |
| 2010 | 332 |
| 2011 | 328 |
| 2012 | 285 |
| 2013 | 339 |
| 2014 | 277 |
| 2015 | 268 |
| 2016 | 268 |
| 2017 | 260 |
| 2018 | 269 |
| 2019 | 223 |
| 2020 | 235 |
| 2021 | 236 |
| 2022 | 184 |
| 2023 | 141 |
| 2024 | 57 |