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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 2 |
| 1958 | 1 |
| 1959 | 1 |
| 1962 | 1 |
| 1963 | 2 |
| 1979 | 8 |
| 1980 | 12 |
| 1981 | 24 |
| 1982 | 12 |
| 1983 | 8 |
| 1984 | 11 |
| 1985 | 21 |
| 1986 | 19 |
| 1987 | 17 |
| 1988 | 24 |
| 1989 | 34 |
| 1990 | 56 |
| 1991 | 97 |
| 1992 | 134 |
| 1993 | 141 |
| 1994 | 166 |
| 1995 | 175 |
| 1996 | 187 |
| 1997 | 181 |
| 1998 | 182 |
| 1999 | 193 |
| 2000 | 180 |
| 2001 | 168 |
| 2002 | 174 |
| 2003 | 150 |
| 2004 | 174 |
| 2005 | 149 |
| 2006 | 157 |
| 2007 | 140 |
| 2008 | 127 |
| 2009 | 152 |
| 2010 | 137 |
| 2011 | 127 |
| 2012 | 119 |
| 2013 | 120 |
| 2014 | 114 |
| 2015 | 104 |
| 2016 | 102 |
| 2017 | 99 |
| 2018 | 104 |
| 2019 | 90 |
| 2020 | 112 |
| 2021 | 77 |
| 2022 | 74 |
| 2023 | 36 |
| 2024 | 16 |