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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1954 | 1 |
| 1955 | 2 |
| 1956 | 2 |
| 1957 | 4 |
| 1958 | 1 |
| 1959 | 3 |
| 1960 | 2 |
| 1961 | 13 |
| 1962 | 36 |
| 1963 | 32 |
| 1964 | 25 |
| 1965 | 34 |
| 1966 | 57 |
| 1967 | 43 |
| 1968 | 48 |
| 1969 | 41 |
| 1970 | 34 |
| 1971 | 38 |
| 1972 | 41 |
| 1973 | 25 |
| 1974 | 31 |
| 1975 | 22 |
| 1976 | 33 |
| 1977 | 32 |
| 1978 | 55 |
| 1979 | 55 |
| 1980 | 70 |
| 1981 | 73 |
| 1982 | 97 |
| 1983 | 88 |
| 1984 | 98 |
| 1985 | 124 |
| 1986 | 122 |
| 1987 | 127 |
| 1988 | 142 |
| 1989 | 160 |
| 1990 | 148 |
| 1991 | 167 |
| 1992 | 190 |
| 1993 | 191 |
| 1994 | 196 |
| 1995 | 208 |
| 1996 | 277 |
| 1997 | 281 |
| 1998 | 273 |
| 1999 | 239 |
| 2000 | 313 |
| 2001 | 283 |
| 2002 | 325 |
| 2003 | 356 |
| 2004 | 345 |
| 2005 | 319 |
| 2006 | 338 |
| 2007 | 369 |
| 2008 | 356 |
| 2009 | 368 |
| 2010 | 378 |
| 2011 | 406 |
| 2012 | 514 |
| 2013 | 492 |
| 2014 | 535 |
| 2015 | 562 |
| 2016 | 612 |
| 2017 | 536 |
| 2018 | 545 |
| 2019 | 578 |
| 2020 | 661 |
| 2021 | 754 |
| 2022 | 761 |
| 2023 | 346 |