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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1966 | 3 |
| 1967 | 4 |
| 1968 | 5 |
| 1969 | 4 |
| 1970 | 2 |
| 1971 | 4 |
| 1972 | 8 |
| 1973 | 8 |
| 1974 | 7 |
| 1975 | 6 |
| 1976 | 6 |
| 1977 | 5 |
| 1978 | 3 |
| 1979 | 3 |
| 1980 | 2 |
| 1981 | 2 |
| 1982 | 7 |
| 1983 | 6 |
| 1984 | 3 |
| 1985 | 5 |
| 1986 | 10 |
| 1987 | 9 |
| 1988 | 15 |
| 1989 | 18 |
| 1990 | 23 |
| 1991 | 22 |
| 1992 | 34 |
| 1993 | 37 |
| 1994 | 39 |
| 1995 | 36 |
| 1996 | 44 |
| 1997 | 40 |
| 1998 | 59 |
| 1999 | 62 |
| 2000 | 78 |
| 2001 | 86 |
| 2002 | 70 |
| 2003 | 97 |
| 2004 | 124 |
| 2005 | 127 |
| 2006 | 133 |
| 2007 | 156 |
| 2008 | 190 |
| 2009 | 223 |
| 2010 | 257 |
| 2011 | 298 |
| 2012 | 356 |
| 2013 | 397 |
| 2014 | 481 |
| 2015 | 489 |
| 2016 | 484 |
| 2017 | 467 |
| 2018 | 484 |
| 2019 | 447 |
| 2020 | 524 |
| 2021 | 522 |
| 2022 | 525 |
| 2023 | 502 |
| 2024 | 145 |