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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1960 | 1 |
| 1966 | 1 |
| 1970 | 3 |
| 1971 | 7 |
| 1972 | 5 |
| 1973 | 2 |
| 1976 | 1 |
| 1977 | 2 |
| 1980 | 1 |
| 1982 | 2 |
| 1983 | 2 |
| 1984 | 1 |
| 1985 | 1 |
| 1986 | 4 |
| 1987 | 3 |
| 1988 | 14 |
| 1989 | 14 |
| 1990 | 11 |
| 1991 | 8 |
| 1992 | 17 |
| 1993 | 18 |
| 1994 | 23 |
| 1995 | 13 |
| 1996 | 25 |
| 1997 | 31 |
| 1998 | 36 |
| 1999 | 44 |
| 2000 | 42 |
| 2001 | 47 |
| 2002 | 55 |
| 2003 | 73 |
| 2004 | 114 |
| 2005 | 128 |
| 2006 | 118 |
| 2007 | 103 |
| 2008 | 105 |
| 2009 | 96 |
| 2010 | 100 |
| 2011 | 110 |
| 2012 | 112 |
| 2013 | 99 |
| 2014 | 112 |
| 2015 | 135 |
| 2016 | 120 |
| 2017 | 90 |
| 2018 | 111 |
| 2019 | 121 |
| 2020 | 149 |
| 2021 | 158 |
| 2022 | 168 |
| 2023 | 154 |
| 2024 | 63 |