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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 4 |
| 1966 | 1 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 5 |
| 1971 | 7 |
| 1972 | 5 |
| 1973 | 49 |
| 1974 | 102 |
| 1975 | 116 |
| 1976 | 145 |
| 1977 | 114 |
| 1978 | 92 |
| 1979 | 101 |
| 1980 | 98 |
| 1981 | 64 |
| 1982 | 66 |
| 1983 | 76 |
| 1984 | 92 |
| 1985 | 78 |
| 1986 | 84 |
| 1987 | 55 |
| 1988 | 73 |
| 1989 | 73 |
| 1990 | 89 |
| 1991 | 96 |
| 1992 | 114 |
| 1993 | 109 |
| 1994 | 151 |
| 1995 | 133 |
| 1996 | 164 |
| 1997 | 158 |
| 1998 | 186 |
| 1999 | 188 |
| 2000 | 146 |
| 2001 | 201 |
| 2002 | 219 |
| 2003 | 209 |
| 2004 | 220 |
| 2005 | 261 |
| 2006 | 321 |
| 2007 | 337 |
| 2008 | 351 |
| 2009 | 338 |
| 2010 | 369 |
| 2011 | 374 |
| 2012 | 412 |
| 2013 | 375 |
| 2014 | 353 |
| 2015 | 317 |
| 2016 | 329 |
| 2017 | 352 |
| 2018 | 261 |
| 2019 | 230 |
| 2020 | 206 |
| 2021 | 91 |
| 2022 | 24 |
| 2023 | 26 |
| 2024 | 14 |