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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 3 |
| 1970 | 3 |
| 1971 | 3 |
| 1972 | 4 |
| 1973 | 4 |
| 1974 | 10 |
| 1976 | 3 |
| 1977 | 3 |
| 1978 | 4 |
| 1979 | 3 |
| 1980 | 4 |
| 1981 | 12 |
| 1982 | 6 |
| 1983 | 10 |
| 1984 | 4 |
| 1985 | 10 |
| 1986 | 9 |
| 1987 | 20 |
| 1988 | 42 |
| 1989 | 32 |
| 1990 | 31 |
| 1991 | 31 |
| 1992 | 32 |
| 1993 | 37 |
| 1994 | 47 |
| 1995 | 52 |
| 1996 | 46 |
| 1997 | 59 |
| 1998 | 65 |
| 1999 | 113 |
| 2000 | 139 |
| 2001 | 166 |
| 2002 | 208 |
| 2003 | 200 |
| 2004 | 233 |
| 2005 | 290 |
| 2006 | 303 |
| 2007 | 333 |
| 2008 | 293 |
| 2009 | 330 |
| 2010 | 331 |
| 2011 | 352 |
| 2012 | 431 |
| 2013 | 404 |
| 2014 | 437 |
| 2015 | 441 |
| 2016 | 413 |
| 2017 | 412 |
| 2018 | 351 |
| 2019 | 248 |
| 2020 | 252 |
| 2021 | 208 |
| 2022 | 84 |
| 2023 | 57 |
| 2024 | 20 |