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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 8 |
| 1952 | 29 |
| 1953 | 17 |
| 1954 | 22 |
| 1955 | 27 |
| 1956 | 20 |
| 1957 | 23 |
| 1958 | 24 |
| 1959 | 12 |
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 4 |
| 1965 | 66 |
| 1966 | 145 |
| 1967 | 142 |
| 1968 | 166 |
| 1969 | 125 |
| 1970 | 148 |
| 1971 | 183 |
| 1972 | 178 |
| 1973 | 201 |
| 1974 | 171 |
| 1975 | 171 |
| 1976 | 195 |
| 1977 | 261 |
| 1978 | 249 |
| 1979 | 274 |
| 1980 | 262 |
| 1981 | 247 |
| 1982 | 254 |
| 1983 | 236 |
| 1984 | 258 |
| 1985 | 262 |
| 1986 | 303 |
| 1987 | 273 |
| 1988 | 267 |
| 1989 | 281 |
| 1990 | 292 |
| 1991 | 331 |
| 1992 | 357 |
| 1993 | 349 |
| 1994 | 340 |
| 1995 | 333 |
| 1996 | 274 |
| 1997 | 276 |
| 1998 | 252 |
| 1999 | 242 |
| 2000 | 313 |
| 2001 | 273 |
| 2002 | 298 |
| 2003 | 308 |
| 2004 | 293 |
| 2005 | 352 |
| 2006 | 384 |
| 2007 | 456 |
| 2008 | 450 |
| 2009 | 423 |
| 2010 | 466 |
| 2011 | 449 |
| 2012 | 504 |
| 2013 | 528 |
| 2014 | 459 |
| 2015 | 490 |
| 2016 | 443 |
| 2017 | 392 |
| 2018 | 380 |
| 2019 | 369 |
| 2020 | 338 |
| 2021 | 256 |
| 2022 | 49 |
| 2023 | 6 |
| 2024 | 2 |