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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 2 |
| 1971 | 4 |
| 1972 | 1 |
| 1973 | 18 |
| 1974 | 20 |
| 1975 | 66 |
| 1976 | 44 |
| 1977 | 44 |
| 1978 | 67 |
| 1979 | 46 |
| 1980 | 67 |
| 1981 | 55 |
| 1982 | 48 |
| 1983 | 64 |
| 1984 | 68 |
| 1985 | 61 |
| 1986 | 76 |
| 1987 | 90 |
| 1988 | 179 |
| 1989 | 168 |
| 1990 | 158 |
| 1991 | 143 |
| 1992 | 155 |
| 1993 | 180 |
| 1994 | 217 |
| 1995 | 181 |
| 1996 | 242 |
| 1997 | 208 |
| 1998 | 245 |
| 1999 | 235 |
| 2000 | 314 |
| 2001 | 456 |
| 2002 | 442 |
| 2003 | 844 |
| 2004 | 1139 |
| 2005 | 1342 |
| 2006 | 1463 |
| 2007 | 1654 |
| 2008 | 1675 |
| 2009 | 2337 |
| 2010 | 2762 |
| 2011 | 2846 |
| 2012 | 2590 |
| 2013 | 2412 |
| 2014 | 2970 |
| 2015 | 2775 |
| 2016 | 3144 |
| 2017 | 3356 |
| 2018 | 3206 |
| 2019 | 3065 |
| 2020 | 2291 |
| 2021 | 1900 |
| 2022 | 1038 |
| 2023 | 907 |
| 2024 | 2596 |
| 2025 | 45 |