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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 5 |
| 1960 | 2 |
| 1961 | 5 |
| 1962 | 10 |
| 1963 | 10 |
| 1964 | 6 |
| 1965 | 5 |
| 1966 | 5 |
| 1967 | 6 |
| 1968 | 8 |
| 1969 | 9 |
| 1970 | 16 |
| 1971 | 20 |
| 1972 | 17 |
| 1973 | 38 |
| 1974 | 20 |
| 1975 | 26 |
| 1976 | 35 |
| 1977 | 34 |
| 1978 | 31 |
| 1979 | 32 |
| 1980 | 38 |
| 1981 | 32 |
| 1982 | 52 |
| 1983 | 40 |
| 1984 | 52 |
| 1985 | 50 |
| 1986 | 59 |
| 1987 | 70 |
| 1988 | 132 |
| 1989 | 148 |
| 1990 | 150 |
| 1991 | 129 |
| 1992 | 139 |
| 1993 | 165 |
| 1994 | 207 |
| 1995 | 247 |
| 1996 | 303 |
| 1997 | 373 |
| 1998 | 467 |
| 1999 | 579 |
| 2000 | 746 |
| 2001 | 875 |
| 2002 | 1018 |
| 2003 | 1230 |
| 2004 | 1509 |
| 2005 | 1762 |
| 2006 | 2078 |
| 2007 | 2351 |
| 2008 | 2740 |
| 2009 | 3163 |
| 2010 | 3686 |
| 2011 | 4269 |
| 2012 | 4857 |
| 2013 | 5143 |
| 2014 | 5638 |
| 2015 | 5982 |
| 2016 | 6102 |
| 2017 | 6251 |
| 2018 | 6370 |
| 2019 | 6507 |
| 2020 | 7458 |
| 2021 | 7987 |
| 2022 | 7343 |
| 2023 | 3320 |