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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1974 | 2 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 1 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 6 |
| 1983 | 1 |
| 1984 | 5 |
| 1985 | 3 |
| 1986 | 3 |
| 1987 | 3 |
| 1988 | 1 |
| 1989 | 3 |
| 1990 | 1 |
| 1991 | 1 |
| 1992 | 3 |
| 1993 | 16 |
| 1994 | 23 |
| 1995 | 44 |
| 1996 | 44 |
| 1997 | 49 |
| 1998 | 60 |
| 1999 | 80 |
| 2000 | 64 |
| 2001 | 70 |
| 2002 | 89 |
| 2003 | 73 |
| 2004 | 105 |
| 2005 | 85 |
| 2006 | 102 |
| 2007 | 118 |
| 2008 | 118 |
| 2009 | 126 |
| 2010 | 122 |
| 2011 | 153 |
| 2012 | 140 |
| 2013 | 137 |
| 2014 | 128 |
| 2015 | 122 |
| 2016 | 145 |
| 2017 | 134 |
| 2018 | 107 |
| 2019 | 103 |
| 2020 | 87 |
| 2021 | 64 |
| 2022 | 48 |
| 2023 | 22 |
| 2024 | 29 |