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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1962 | 1 |
| 1963 | 1 |
| 1971 | 2 |
| 1973 | 1 |
| 1974 | 11 |
| 1975 | 41 |
| 1976 | 67 |
| 1977 | 161 |
| 1978 | 100 |
| 1979 | 124 |
| 1980 | 160 |
| 1981 | 159 |
| 1982 | 180 |
| 1983 | 198 |
| 1984 | 233 |
| 1985 | 278 |
| 1986 | 257 |
| 1987 | 265 |
| 1988 | 341 |
| 1989 | 303 |
| 1990 | 376 |
| 1991 | 326 |
| 1992 | 318 |
| 1993 | 296 |
| 1994 | 309 |
| 1995 | 281 |
| 1996 | 245 |
| 1997 | 247 |
| 1998 | 182 |
| 1999 | 133 |
| 2000 | 108 |
| 2001 | 99 |
| 2002 | 94 |
| 2003 | 88 |
| 2004 | 71 |
| 2005 | 85 |
| 2006 | 90 |
| 2007 | 70 |
| 2008 | 69 |
| 2009 | 65 |
| 2010 | 46 |
| 2011 | 62 |
| 2012 | 57 |
| 2013 | 36 |
| 2014 | 41 |
| 2015 | 28 |
| 2016 | 25 |
| 2017 | 28 |
| 2018 | 17 |
| 2019 | 16 |
| 2020 | 23 |
| 2021 | 12 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 0 |