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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1956 | 1 |
| 1964 | 10 |
| 1965 | 9 |
| 1966 | 4 |
| 1967 | 22 |
| 1968 | 28 |
| 1969 | 90 |
| 1970 | 117 |
| 1971 | 52 |
| 1972 | 26 |
| 1973 | 33 |
| 1974 | 38 |
| 1975 | 41 |
| 1976 | 20 |
| 1977 | 24 |
| 1978 | 34 |
| 1979 | 67 |
| 1980 | 39 |
| 1981 | 31 |
| 1982 | 26 |
| 1983 | 40 |
| 1984 | 34 |
| 1985 | 57 |
| 1986 | 128 |
| 1987 | 64 |
| 1988 | 82 |
| 1989 | 126 |
| 1990 | 153 |
| 1991 | 184 |
| 1992 | 219 |
| 1993 | 248 |
| 1994 | 306 |
| 1995 | 347 |
| 1996 | 508 |
| 1997 | 524 |
| 1998 | 692 |
| 1999 | 622 |
| 2000 | 482 |
| 2001 | 438 |
| 2002 | 410 |
| 2003 | 670 |
| 2004 | 867 |
| 2005 | 1178 |
| 2006 | 1431 |
| 2007 | 1640 |
| 2008 | 1788 |
| 2009 | 1845 |
| 2010 | 2004 |
| 2011 | 2795 |
| 2012 | 2760 |
| 2013 | 2675 |
| 2014 | 2262 |
| 2015 | 2102 |
| 2016 | 2282 |
| 2017 | 2190 |
| 2018 | 2165 |
| 2019 | 1793 |
| 2020 | 1847 |
| 2021 | 1679 |
| 2022 | 1406 |
| 2023 | 1075 |
| 2024 | 393 |