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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 1 |
| 1962 | 1 |
| 1965 | 4 |
| 1966 | 14 |
| 1967 | 44 |
| 1968 | 53 |
| 1969 | 103 |
| 1970 | 94 |
| 1971 | 116 |
| 1972 | 127 |
| 1973 | 202 |
| 1974 | 217 |
| 1975 | 150 |
| 1976 | 119 |
| 1977 | 127 |
| 1978 | 140 |
| 1979 | 168 |
| 1980 | 159 |
| 1981 | 112 |
| 1982 | 155 |
| 1983 | 202 |
| 1984 | 226 |
| 1985 | 184 |
| 1986 | 218 |
| 1987 | 180 |
| 1988 | 206 |
| 1989 | 184 |
| 1990 | 243 |
| 1991 | 246 |
| 1992 | 240 |
| 1993 | 220 |
| 1994 | 211 |
| 1995 | 210 |
| 1996 | 211 |
| 1997 | 231 |
| 1998 | 210 |
| 1999 | 201 |
| 2000 | 189 |
| 2001 | 193 |
| 2002 | 225 |
| 2003 | 251 |
| 2004 | 242 |
| 2005 | 262 |
| 2006 | 312 |
| 2007 | 343 |
| 2008 | 311 |
| 2009 | 324 |
| 2010 | 282 |
| 2011 | 304 |
| 2012 | 340 |
| 2013 | 337 |
| 2014 | 329 |
| 2015 | 319 |
| 2016 | 281 |
| 2017 | 264 |
| 2018 | 186 |
| 2019 | 148 |
| 2020 | 119 |
| 2021 | 69 |
| 2022 | 7 |
| 2023 | 2 |
| 2024 | 6 |