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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1951 | 2 |
| 1952 | 6 |
| 1953 | 5 |
| 1954 | 1 |
| 1955 | 3 |
| 1956 | 5 |
| 1957 | 6 |
| 1958 | 2 |
| 1959 | 6 |
| 1960 | 3 |
| 1961 | 9 |
| 1962 | 29 |
| 1963 | 21 |
| 1964 | 28 |
| 1965 | 16 |
| 1967 | 2 |
| 1969 | 1 |
| 1976 | 1 |
| 1977 | 25 |
| 1978 | 80 |
| 1979 | 96 |
| 1980 | 95 |
| 1981 | 124 |
| 1982 | 148 |
| 1983 | 234 |
| 1984 | 233 |
| 1985 | 272 |
| 1986 | 260 |
| 1987 | 257 |
| 1988 | 320 |
| 1989 | 365 |
| 1990 | 281 |
| 1991 | 286 |
| 1992 | 275 |
| 1993 | 270 |
| 1994 | 353 |
| 1995 | 289 |
| 1996 | 284 |
| 1997 | 267 |
| 1998 | 296 |
| 1999 | 314 |
| 2000 | 273 |
| 2001 | 284 |
| 2002 | 299 |
| 2003 | 247 |
| 2004 | 281 |
| 2005 | 229 |
| 2006 | 224 |
| 2007 | 216 |
| 2008 | 237 |
| 2009 | 222 |
| 2010 | 251 |
| 2011 | 260 |
| 2012 | 237 |
| 2013 | 226 |
| 2014 | 222 |
| 2015 | 214 |
| 2016 | 189 |
| 2017 | 165 |
| 2018 | 139 |
| 2019 | 133 |
| 2020 | 151 |
| 2021 | 121 |
| 2022 | 82 |
| 2023 | 72 |
| 2024 | 57 |