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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 11 |
| 1967 | 43 |
| 1968 | 54 |
| 1969 | 67 |
| 1970 | 41 |
| 1971 | 53 |
| 1972 | 66 |
| 1973 | 63 |
| 1974 | 53 |
| 1975 | 55 |
| 1976 | 59 |
| 1977 | 76 |
| 1978 | 79 |
| 1979 | 90 |
| 1980 | 105 |
| 1981 | 123 |
| 1982 | 87 |
| 1983 | 103 |
| 1984 | 115 |
| 1985 | 85 |
| 1986 | 131 |
| 1987 | 152 |
| 1988 | 177 |
| 1989 | 174 |
| 1990 | 149 |
| 1991 | 148 |
| 1992 | 147 |
| 1993 | 117 |
| 1994 | 149 |
| 1995 | 147 |
| 1996 | 138 |
| 1997 | 106 |
| 1998 | 129 |
| 1999 | 137 |
| 2000 | 145 |
| 2001 | 149 |
| 2002 | 169 |
| 2003 | 240 |
| 2004 | 240 |
| 2005 | 321 |
| 2006 | 308 |
| 2007 | 377 |
| 2008 | 396 |
| 2009 | 394 |
| 2010 | 432 |
| 2011 | 503 |
| 2012 | 536 |
| 2013 | 570 |
| 2014 | 582 |
| 2015 | 616 |
| 2016 | 624 |
| 2017 | 528 |
| 2018 | 562 |
| 2019 | 527 |
| 2020 | 512 |
| 2021 | 398 |
| 2022 | 132 |
| 2023 | 50 |
| 2024 | 52 |