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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1958 | 3 |
| 1959 | 8 |
| 1960 | 7 |
| 1961 | 14 |
| 1962 | 14 |
| 1963 | 40 |
| 1964 | 57 |
| 1965 | 48 |
| 1966 | 77 |
| 1967 | 98 |
| 1968 | 115 |
| 1969 | 155 |
| 1970 | 178 |
| 1971 | 252 |
| 1972 | 308 |
| 1973 | 367 |
| 1974 | 388 |
| 1975 | 365 |
| 1976 | 339 |
| 1977 | 311 |
| 1978 | 307 |
| 1979 | 298 |
| 1980 | 308 |
| 1981 | 291 |
| 1982 | 322 |
| 1983 | 302 |
| 1984 | 319 |
| 1985 | 325 |
| 1986 | 277 |
| 1987 | 259 |
| 1988 | 281 |
| 1989 | 261 |
| 1990 | 229 |
| 1991 | 234 |
| 1992 | 227 |
| 1993 | 220 |
| 1994 | 217 |
| 1995 | 204 |
| 1996 | 157 |
| 1997 | 185 |
| 1998 | 179 |
| 1999 | 218 |
| 2000 | 213 |
| 2001 | 233 |
| 2002 | 176 |
| 2003 | 216 |
| 2004 | 193 |
| 2005 | 213 |
| 2006 | 248 |
| 2007 | 224 |
| 2008 | 262 |
| 2009 | 354 |
| 2010 | 399 |
| 2011 | 422 |
| 2012 | 371 |
| 2013 | 378 |
| 2014 | 362 |
| 2015 | 353 |
| 2016 | 285 |
| 2017 | 264 |
| 2018 | 282 |
| 2019 | 292 |
| 2020 | 276 |
| 2021 | 217 |
| 2022 | 235 |
| 2023 | 171 |
| 2024 | 152 |