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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1967 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1972 | 1 |
| 1974 | 3 |
| 1975 | 2 |
| 1979 | 2 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 3 |
| 1987 | 1 |
| 1988 | 4 |
| 1989 | 6 |
| 1990 | 4 |
| 1991 | 7 |
| 1992 | 6 |
| 1993 | 7 |
| 1994 | 12 |
| 1995 | 9 |
| 1996 | 11 |
| 1997 | 12 |
| 1998 | 17 |
| 1999 | 23 |
| 2000 | 17 |
| 2001 | 28 |
| 2002 | 22 |
| 2003 | 43 |
| 2004 | 50 |
| 2005 | 63 |
| 2006 | 80 |
| 2007 | 62 |
| 2008 | 84 |
| 2009 | 107 |
| 2010 | 118 |
| 2011 | 124 |
| 2012 | 166 |
| 2013 | 173 |
| 2014 | 187 |
| 2015 | 189 |
| 2016 | 178 |
| 2017 | 142 |
| 2018 | 139 |
| 2019 | 142 |
| 2020 | 158 |
| 2021 | 147 |
| 2022 | 134 |
| 2023 | 114 |
| 2024 | 109 |
| 2025 | 86 |