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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1977 | 16 |
| 1978 | 91 |
| 1979 | 125 |
| 1980 | 164 |
| 1981 | 191 |
| 1982 | 183 |
| 1983 | 180 |
| 1984 | 210 |
| 1985 | 217 |
| 1986 | 168 |
| 1987 | 121 |
| 1988 | 116 |
| 1989 | 136 |
| 1990 | 119 |
| 1991 | 126 |
| 1992 | 120 |
| 1993 | 103 |
| 1994 | 103 |
| 1995 | 87 |
| 1996 | 87 |
| 1997 | 78 |
| 1998 | 104 |
| 1999 | 82 |
| 2000 | 82 |
| 2001 | 77 |
| 2002 | 69 |
| 2003 | 81 |
| 2004 | 67 |
| 2005 | 88 |
| 2006 | 96 |
| 2007 | 97 |
| 2008 | 86 |
| 2009 | 117 |
| 2010 | 104 |
| 2011 | 101 |
| 2012 | 101 |
| 2013 | 116 |
| 2014 | 111 |
| 2015 | 111 |
| 2016 | 107 |
| 2017 | 87 |
| 2018 | 85 |
| 2019 | 85 |
| 2020 | 88 |
| 2021 | 94 |
| 2022 | 78 |
| 2023 | 51 |
| 2024 | 29 |