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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 8 |
| 1965 | 23 |
| 1966 | 42 |
| 1967 | 50 |
| 1968 | 63 |
| 1969 | 77 |
| 1970 | 79 |
| 1971 | 98 |
| 1972 | 129 |
| 1973 | 144 |
| 1974 | 156 |
| 1975 | 114 |
| 1976 | 117 |
| 1977 | 139 |
| 1978 | 112 |
| 1979 | 145 |
| 1980 | 144 |
| 1981 | 124 |
| 1982 | 108 |
| 1983 | 128 |
| 1984 | 138 |
| 1985 | 160 |
| 1986 | 160 |
| 1987 | 168 |
| 1988 | 151 |
| 1989 | 179 |
| 1990 | 199 |
| 1991 | 215 |
| 1992 | 186 |
| 1993 | 271 |
| 1994 | 300 |
| 1995 | 233 |
| 1996 | 266 |
| 1997 | 241 |
| 1998 | 310 |
| 1999 | 294 |
| 2000 | 281 |
| 2001 | 246 |
| 2002 | 329 |
| 2003 | 343 |
| 2004 | 318 |
| 2005 | 287 |
| 2006 | 279 |
| 2007 | 317 |
| 2008 | 315 |
| 2009 | 308 |
| 2010 | 298 |
| 2011 | 307 |
| 2012 | 308 |
| 2013 | 291 |
| 2014 | 255 |
| 2015 | 237 |
| 2016 | 195 |
| 2017 | 168 |
| 2018 | 119 |
| 2019 | 93 |
| 2020 | 97 |
| 2021 | 77 |
| 2022 | 16 |
| 2023 | 2 |
| 2024 | 0 |