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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 4 |
| 1967 | 3 |
| 1968 | 6 |
| 1969 | 5 |
| 1970 | 5 |
| 1971 | 5 |
| 1972 | 7 |
| 1973 | 12 |
| 1974 | 26 |
| 1975 | 37 |
| 1976 | 32 |
| 1977 | 32 |
| 1978 | 36 |
| 1979 | 30 |
| 1980 | 30 |
| 1981 | 23 |
| 1982 | 28 |
| 1983 | 36 |
| 1984 | 34 |
| 1985 | 39 |
| 1986 | 49 |
| 1987 | 58 |
| 1988 | 61 |
| 1989 | 76 |
| 1990 | 116 |
| 1991 | 98 |
| 1992 | 126 |
| 1993 | 141 |
| 1994 | 175 |
| 1995 | 202 |
| 1996 | 204 |
| 1997 | 229 |
| 1998 | 220 |
| 1999 | 243 |
| 2000 | 294 |
| 2001 | 300 |
| 2002 | 337 |
| 2003 | 407 |
| 2004 | 521 |
| 2005 | 635 |
| 2006 | 656 |
| 2007 | 738 |
| 2008 | 853 |
| 2009 | 907 |
| 2010 | 1044 |
| 2011 | 1058 |
| 2012 | 1146 |
| 2013 | 1211 |
| 2014 | 1105 |
| 2015 | 1003 |
| 2016 | 952 |
| 2017 | 848 |
| 2018 | 870 |
| 2019 | 777 |
| 2020 | 499 |
| 2021 | 328 |
| 2022 | 51 |
| 2023 | 15 |
| 2024 | 82 |