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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 23 |
| 1964 | 51 |
| 1965 | 41 |
| 1966 | 69 |
| 1967 | 87 |
| 1968 | 119 |
| 1969 | 129 |
| 1970 | 141 |
| 1971 | 223 |
| 1972 | 195 |
| 1973 | 252 |
| 1974 | 203 |
| 1975 | 231 |
| 1976 | 244 |
| 1977 | 196 |
| 1978 | 254 |
| 1979 | 207 |
| 1980 | 151 |
| 1981 | 237 |
| 1982 | 195 |
| 1983 | 210 |
| 1984 | 237 |
| 1985 | 225 |
| 1986 | 186 |
| 1987 | 212 |
| 1988 | 138 |
| 1989 | 168 |
| 1990 | 174 |
| 1991 | 200 |
| 1992 | 243 |
| 1993 | 249 |
| 1994 | 295 |
| 1995 | 308 |
| 1996 | 366 |
| 1997 | 329 |
| 1998 | 357 |
| 1999 | 366 |
| 2000 | 316 |
| 2001 | 320 |
| 2002 | 262 |
| 2003 | 274 |
| 2004 | 338 |
| 2005 | 464 |
| 2006 | 499 |
| 2007 | 354 |
| 2008 | 363 |
| 2009 | 357 |
| 2010 | 360 |
| 2011 | 289 |
| 2012 | 268 |
| 2013 | 207 |
| 2014 | 247 |
| 2015 | 268 |
| 2016 | 187 |
| 2017 | 191 |
| 2018 | 151 |
| 2019 | 167 |
| 2020 | 141 |
| 2021 | 161 |
| 2022 | 118 |
| 2023 | 110 |
| 2024 | 47 |