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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 2 |
| 1971 | 2 |
| 1972 | 2 |
| 1974 | 1 |
| 1975 | 1 |
| 1977 | 1 |
| 1980 | 2 |
| 1981 | 9 |
| 1982 | 6 |
| 1983 | 6 |
| 1984 | 7 |
| 1985 | 5 |
| 1986 | 7 |
| 1987 | 6 |
| 1988 | 10 |
| 1989 | 15 |
| 1990 | 23 |
| 1991 | 20 |
| 1992 | 18 |
| 1993 | 8 |
| 1994 | 15 |
| 1995 | 24 |
| 1996 | 29 |
| 1997 | 27 |
| 1998 | 60 |
| 1999 | 52 |
| 2000 | 83 |
| 2001 | 87 |
| 2002 | 114 |
| 2003 | 167 |
| 2004 | 205 |
| 2005 | 238 |
| 2006 | 286 |
| 2007 | 296 |
| 2008 | 346 |
| 2009 | 444 |
| 2010 | 487 |
| 2011 | 556 |
| 2012 | 614 |
| 2013 | 742 |
| 2014 | 732 |
| 2015 | 762 |
| 2016 | 761 |
| 2017 | 798 |
| 2018 | 886 |
| 2019 | 898 |
| 2020 | 1028 |
| 2021 | 1029 |
| 2022 | 927 |
| 2023 | 972 |
| 2024 | 849 |
| 2025 | 4 |