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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 5 |
| 1960 | 7 |
| 1961 | 8 |
| 1962 | 9 |
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 22 |
| 1967 | 87 |
| 1968 | 176 |
| 1969 | 165 |
| 1970 | 199 |
| 1971 | 192 |
| 1972 | 205 |
| 1973 | 213 |
| 1974 | 231 |
| 1975 | 260 |
| 1976 | 172 |
| 1977 | 230 |
| 1978 | 242 |
| 1979 | 255 |
| 1980 | 288 |
| 1981 | 228 |
| 1982 | 232 |
| 1983 | 214 |
| 1984 | 268 |
| 1985 | 273 |
| 1986 | 252 |
| 1987 | 270 |
| 1988 | 293 |
| 1989 | 342 |
| 1990 | 306 |
| 1991 | 327 |
| 1992 | 318 |
| 1993 | 296 |
| 1994 | 351 |
| 1995 | 287 |
| 1996 | 313 |
| 1997 | 252 |
| 1998 | 276 |
| 1999 | 324 |
| 2000 | 291 |
| 2001 | 281 |
| 2002 | 290 |
| 2003 | 248 |
| 2004 | 283 |
| 2005 | 267 |
| 2006 | 308 |
| 2007 | 225 |
| 2008 | 186 |
| 2009 | 163 |
| 2010 | 149 |
| 2011 | 137 |
| 2012 | 128 |
| 2013 | 109 |
| 2014 | 95 |
| 2015 | 131 |
| 2016 | 83 |
| 2017 | 91 |
| 2018 | 79 |
| 2019 | 105 |
| 2020 | 98 |
| 2021 | 57 |
| 2022 | 21 |
| 2023 | 10 |
| 2024 | 5 |