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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1958 | 1 |
| 1959 | 2 |
| 1963 | 2 |
| 1974 | 12 |
| 1975 | 35 |
| 1976 | 40 |
| 1977 | 25 |
| 1978 | 18 |
| 1979 | 26 |
| 1980 | 15 |
| 1981 | 13 |
| 1982 | 18 |
| 1983 | 16 |
| 1984 | 23 |
| 1985 | 18 |
| 1986 | 8 |
| 1987 | 31 |
| 1988 | 22 |
| 1989 | 18 |
| 1990 | 31 |
| 1991 | 25 |
| 1992 | 23 |
| 1993 | 36 |
| 1994 | 50 |
| 1995 | 54 |
| 1996 | 48 |
| 1997 | 64 |
| 1998 | 60 |
| 1999 | 60 |
| 2000 | 72 |
| 2001 | 86 |
| 2002 | 74 |
| 2003 | 138 |
| 2004 | 126 |
| 2005 | 166 |
| 2006 | 213 |
| 2007 | 247 |
| 2008 | 213 |
| 2009 | 243 |
| 2010 | 174 |
| 2011 | 155 |
| 2012 | 131 |
| 2013 | 128 |
| 2014 | 106 |
| 2015 | 114 |
| 2016 | 102 |
| 2017 | 107 |
| 2018 | 101 |
| 2019 | 119 |
| 2020 | 79 |
| 2021 | 26 |
| 2022 | 5 |
| 2023 | 4 |
| 2024 | 1 |