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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 1 |
| 1955 | 1 |
| 1957 | 3 |
| 1958 | 7 |
| 1959 | 3 |
| 1963 | 1 |
| 1964 | 3 |
| 1965 | 58 |
| 1966 | 126 |
| 1967 | 174 |
| 1968 | 191 |
| 1969 | 191 |
| 1970 | 171 |
| 1971 | 169 |
| 1972 | 185 |
| 1973 | 211 |
| 1974 | 205 |
| 1975 | 210 |
| 1976 | 181 |
| 1977 | 209 |
| 1978 | 169 |
| 1979 | 225 |
| 1980 | 238 |
| 1981 | 213 |
| 1982 | 217 |
| 1983 | 235 |
| 1984 | 270 |
| 1985 | 281 |
| 1986 | 282 |
| 1987 | 259 |
| 1988 | 287 |
| 1989 | 340 |
| 1990 | 344 |
| 1991 | 379 |
| 1992 | 327 |
| 1993 | 403 |
| 1994 | 367 |
| 1995 | 411 |
| 1996 | 438 |
| 1997 | 465 |
| 1998 | 505 |
| 1999 | 604 |
| 2000 | 605 |
| 2001 | 579 |
| 2002 | 755 |
| 2003 | 886 |
| 2004 | 865 |
| 2005 | 1054 |
| 2006 | 1141 |
| 2007 | 1252 |
| 2008 | 1299 |
| 2009 | 1515 |
| 2010 | 1655 |
| 2011 | 1784 |
| 2012 | 1983 |
| 2013 | 2003 |
| 2014 | 2093 |
| 2015 | 2202 |
| 2016 | 2189 |
| 2017 | 2379 |
| 2018 | 2493 |
| 2019 | 2548 |
| 2020 | 2170 |
| 2021 | 1530 |
| 2022 | 202 |
| 2023 | 41 |
| 2024 | 202 |