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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 1 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 4 |
| 1970 | 2 |
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 2 |
| 1976 | 1 |
| 1977 | 2 |
| 1978 | 4 |
| 1979 | 4 |
| 1980 | 7 |
| 1981 | 2 |
| 1982 | 4 |
| 1983 | 4 |
| 1984 | 5 |
| 1985 | 24 |
| 1986 | 69 |
| 1987 | 62 |
| 1988 | 87 |
| 1989 | 158 |
| 1990 | 205 |
| 1991 | 198 |
| 1992 | 131 |
| 1993 | 164 |
| 1994 | 183 |
| 1995 | 204 |
| 1996 | 196 |
| 1997 | 194 |
| 1998 | 201 |
| 1999 | 218 |
| 2000 | 162 |
| 2001 | 132 |
| 2002 | 132 |
| 2003 | 122 |
| 2004 | 152 |
| 2005 | 162 |
| 2006 | 202 |
| 2007 | 226 |
| 2008 | 191 |
| 2009 | 138 |
| 2010 | 187 |
| 2011 | 163 |
| 2012 | 170 |
| 2013 | 104 |
| 2014 | 107 |
| 2015 | 108 |
| 2016 | 103 |
| 2017 | 113 |
| 2018 | 114 |
| 2019 | 102 |
| 2020 | 110 |
| 2021 | 79 |
| 2022 | 70 |
| 2023 | 66 |
| 2024 | 24 |