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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 5 |
| 1956 | 1 |
| 1957 | 4 |
| 1958 | 8 |
| 1959 | 1 |
| 1960 | 4 |
| 1961 | 3 |
| 1962 | 7 |
| 1964 | 1 |
| 1965 | 8 |
| 1966 | 25 |
| 1967 | 46 |
| 1968 | 31 |
| 1969 | 27 |
| 1970 | 40 |
| 1971 | 48 |
| 1972 | 71 |
| 1973 | 62 |
| 1974 | 75 |
| 1975 | 86 |
| 1976 | 52 |
| 1977 | 51 |
| 1978 | 41 |
| 1979 | 59 |
| 1980 | 59 |
| 1981 | 65 |
| 1982 | 78 |
| 1983 | 73 |
| 1984 | 66 |
| 1985 | 78 |
| 1986 | 83 |
| 1987 | 87 |
| 1988 | 130 |
| 1989 | 106 |
| 1990 | 131 |
| 1991 | 146 |
| 1992 | 141 |
| 1993 | 146 |
| 1994 | 142 |
| 1995 | 185 |
| 1996 | 144 |
| 1997 | 195 |
| 1998 | 215 |
| 1999 | 195 |
| 2000 | 206 |
| 2001 | 245 |
| 2002 | 278 |
| 2003 | 262 |
| 2004 | 315 |
| 2005 | 317 |
| 2006 | 349 |
| 2007 | 423 |
| 2008 | 372 |
| 2009 | 441 |
| 2010 | 439 |
| 2011 | 467 |
| 2012 | 487 |
| 2013 | 520 |
| 2014 | 463 |
| 2015 | 511 |
| 2016 | 526 |
| 2017 | 445 |
| 2018 | 476 |
| 2019 | 473 |
| 2020 | 422 |
| 2021 | 330 |
| 2022 | 276 |
| 2023 | 265 |
| 2024 | 389 |
| 2025 | 217 |